[![Logo](https://www.paloaltonetworks.com/wp-content/uploads/2021/07/PANW_Parent.png)](https://www.paloaltonetworks.jp/) [![Unit42 Logo](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/unit42-logo-white.svg)](https://unit42.paloaltonetworks.com/ja/) Menu * [セキュリティ コンサルティング](https://www.paloaltonetworks.com/unit42) * [**現在、攻撃を受けていますか?**](https://start.paloaltonetworks.com/contact-unit42.html) Japanese * [English](https://unit42.paloaltonetworks.com/palo-alto-networks-researcher-discovers-two-critical-internet-explorer-vulnerabilities/) * [Japanese](https://unit42.paloaltonetworks.com/ja/palo-alto-networks-researcher-discovers-two-critical-internet-explorer-vulnerabilities/) * [Threat Research Center](https://unit42.paloaltonetworks.com/ja/ "Threat Research") * [脅威リサーチ](https://unit42.paloaltonetworks.com/ja/category/threat-research-ja/ "脅威リサーチ") * [脆弱性](https://unit42.paloaltonetworks.com/ja/category/vulnerabilities-ja/ "脆弱性") [脆弱性](https://unit42.paloaltonetworks.com/ja/category/vulnerabilities-ja/) # パロアルトネットワークスのパロアルトネットワークスのリサーチャーがInternet Explorerに重大な脆弱性を2件発見 ![Clock Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-clock.svg) 1未満 分で読めます * ![Profile Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-profile-grey.svg) 著者: * [Ryan Olson](https://unit42.paloaltonetworks.com/ja/author/ryan-olson/) * ![Published Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-calendar-grey.svg) 公開日:2015年7月16日 * ![Tags Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-category.svg) カテゴリー * [脆弱性](https://unit42.paloaltonetworks.com/ja/category/vulnerabilities-ja/) * [脅威リサーチ](https://unit42.paloaltonetworks.com/ja/category/threat-research-ja/) * ![Tags Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-tags-grey.svg) タグ: * [Internet Explorer](https://unit42.paloaltonetworks.com/ja/tag/internet-explorer-ja/) * [Microsoft](https://unit42.paloaltonetworks.com/ja/tag/microsoft-ja/) * [Microsoft Security Bulletin](https://unit42.paloaltonetworks.com/ja/tag/microsoft-security-bulletin-ja/) * [![Download Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-download.svg)](https://unit42.paloaltonetworks.com/ja/palo-alto-networks-researcher-discovers-two-critical-internet-explorer-vulnerabilities/?pdf=download&lg=ja&_wpnonce=40dbae5d0f "Click here to download") * [![Print Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-print.svg)](https://unit42.paloaltonetworks.com/ja/palo-alto-networks-researcher-discovers-two-critical-internet-explorer-vulnerabilities/?pdf=print&lg=ja&_wpnonce=40dbae5d0f "Click here to print") 共有![Down arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/down-arrow.svg) * ![Link Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-share-link.svg) * [![Link Email](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-sms.svg)](mailto:?subject=パロアルトネットワークスのパロアルトネットワークスのリサーチャーがInternet%20Explorerに重大な脆弱性を2件発見&body=Check%20out%20this%20article%20https%3A%2F%2Funit42.paloaltonetworks.com%2Fja%2Fpalo-alto-networks-researcher-discovers-two-critical-internet-explorer-vulnerabilities%2F "Share in email") * [![Facebook Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-fb-share.svg)](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Funit42.paloaltonetworks.com%2Fja%2Fpalo-alto-networks-researcher-discovers-two-critical-internet-explorer-vulnerabilities%2F "Share in Facebook") * [![LinkedIn Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-linkedin-share.svg)](https://www.linkedin.com/sharing/share-offsite/?url=https%3A%2F%2Funit42.paloaltonetworks.com%2Fja%2Fpalo-alto-networks-researcher-discovers-two-critical-internet-explorer-vulnerabilities%2F&title=パロアルトネットワークスのパロアルトネットワークスのリサーチャーがInternet%20Explorerに重大な脆弱性を2件発見 "Share in LinkedIn") * [![Twitter Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-twitter-share.svg)](https://twitter.com/intent/tweet?url=https%3A%2F%2Funit42.paloaltonetworks.com%2Fja%2Fpalo-alto-networks-researcher-discovers-two-critical-internet-explorer-vulnerabilities%2F&text=パロアルトネットワークスのパロアルトネットワークスのリサーチャーがInternet%20Explorerに重大な脆弱性を2件発見 "Share in Twitter") * [![Reddit Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-reddit-share.svg)](https://www.paloaltonetworks.com//www.reddit.com/submit?url=https%3A%2F%2Funit42.paloaltonetworks.com%2Fja%2Fpalo-alto-networks-researcher-discovers-two-critical-internet-explorer-vulnerabilities%2F&ts=markdown "Share in Reddit") * [![Mastodon Icon](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-mastodon-share.svg)](https://mastodon.social/share?text=パロアルトネットワークスのパロアルトネットワークスのリサーチャーがInternet%20Explorerに重大な脆弱性を2件発見%20https%3A%2F%2Funit42.paloaltonetworks.com%2Fja%2Fpalo-alto-networks-researcher-discovers-two-critical-internet-explorer-vulnerabilities%2F "Share in Mastodon") パロアルトネットワークスのリサーチャー、ボー・クーがMicrosoft Internet Explorer (以下、IE) バージョン 6、7、8、9、10、11に影響をおよぼす脆弱性2件を[発見](https://technet.microsoft.com/library/security/dn903755.aspx)しました。これら2件の脆弱性は[2015年7月のマイクロソフト セキュリティ情報](https://technet.microsoft.com/ja-jp/library/security/ms15-jul.aspx)に含まれ、[Microsoft Security Bulletin MS15-065](https://technet.microsoft.com/library/security/MS15-056)と[MS15-066](https://technet.microsoft.com/ja-JP/library/security/ms15-066.aspx)で参照できます。 パロアルトネットワークスはセキュリティ・リサーチコミュニティへの継続的なコミットメントとして、Microsoft Active Protections Program (MAPP)のメンバー企業の一員として、今回の脆弱性情報をMicrosoftへ報告しています。Microsoft Active Protections Program (MAPP)は、セキュリティベンダー各社がセキュリティ対策の早期提供と責任ある脆弱性情報の開示を実現できるよう設立されました。 パロアルトネットワークスはこれまでもIEの脆弱性リサーチに定期的に貢献しています。これまでに発見したIEの脆弱性は、[2015年6月の3件](https://unit42.paloaltonetworks.jp/palo-alto-networks-researcher-discovers-3-critical-internet-explorer-vulnerabilities-2/)、[2015年5月の3件](https://unit42.paloaltonetworks.com/palo-alto-networks-researcher-discovers-3-critical-internet-explorer-vulnerabilities/)、[2015年3月の1件](https://unit42.paloaltonetworks.jp/palo-alto-networks-researcher-identifies-critical-internet-explorer-vulnerability/)、[2015年2月の5件](https://unit42.paloaltonetworks.jp/palo-alto-networks-researcher-identifies-3-critical-internet-explorer-vulnerabilities/)（当時発表３件からの上方修正）、[2014年11月の3件](https://unit42.paloaltonetworks.com/palo-alto-networks-identifies-3-critical-internet-explorer-vulnerabilities/)、[2014年10月の1件、](https://unit42.paloaltonetworks.jp/palo-alto-networks-identifies-critical-internet-explorer-vulnerability/)[2014年9月の15件、](https://unit42.paloaltonetworks.com/palo-alto-networks-identifies-15-critical-internet-explorer-vulnerabilities/)[2014年8月の3件](https://unit42.paloaltonetworks.com/palo-alto-networks-discovers-3-critical-internet-explorer-vulnerabilities/)、[2014年7月の10件](https://blog.paloaltonetworks.com/2014/07/palo-alto-networks-discovers-additional-10-critical-internet-explorer-vulnerabilities/)、[2014年6月の22件](https://unit42.paloaltonetworks.com/palo-alto-networks-identifies-new-critical-vulnerabilities-internet-explorer/)（当時発表21件から上方修正）でした。 パロアルトネットワークスは、脆弱性の積極的な発見、顧客向けプロテクションの開発、パッチ適用の為のMicrosoftへの情報共有などを通じて、企業ネットワークの情報漏えいを狙った攻撃の脅威を取り除くことに尽力しています。 トップに戻る ### タグ * [Internet Explorer](https://unit42.paloaltonetworks.com/ja/tag/internet-explorer-ja/ "Internet Explorer") * [Microsoft](https://unit42.paloaltonetworks.com/ja/tag/microsoft-ja/ "Microsoft") * [Microsoft Security Bulletin](https://unit42.paloaltonetworks.com/ja/tag/microsoft-security-bulletin-ja/ "Microsoft Security Bulletin") [Threat Research Center](https://unit42.paloaltonetworks.com/ja/ "Threat Research") [次ページ:APT 攻撃グループのUPS、伊企業のHacking Teamの攻撃に使われたFlashの脆弱性を利用し米国政府を標的に](https://unit42.paloaltonetworks.com/ja/apt-group-ups-targets-us-government-with-hacking-team-flash-exploit/ "APT 攻撃グループのUPS、伊企業のHacking Teamの攻撃に使われたFlashの脆弱性を利用し米国政府を標的に") ### 関連記事 * [Microsoft WSUSのリモートコード実行の脆弱性（CVE-2025-59287）、実環境における活発な悪用を確認（11月3日更新）](https://unit42.paloaltonetworks.com/ja/microsoft-cve-2025-59287/ "article - table of contents") * [Jingle Thief: クラウドベースのギフトカード詐欺キャンペーンの実態](https://unit42.paloaltonetworks.com/ja/cloud-based-gift-card-fraud-campaign/ "article - table of contents") * [モデル名前空間の再利用テクニック: AIサプライチェーンの基本的側面を誤用する](https://unit42.paloaltonetworks.com/ja/model-namespace-reuse/ "article - table of contents") ## 関連項目 リソース ![Pictorial representation of a severe Linux vulnerability. Close-up of a woman wearing glasses and focusing intently on a computer screen.](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/05/05_Vulnerabilities_1920x900-2-1-786x368.jpg) [![category icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2024/07/top-threats.svg)主なサイバー脅威](https://unit42.paloaltonetworks.com/ja/category/top-cyberthreats-ja/) 2026年5月5日 [#### Copy Fail:ここ数年で最も深刻なLinuxの脅威について必要な知識](https://unit42.paloaltonetworks.com/ja/cve-2026-31431-copy-fail/) * [Containers](https://unit42.paloaltonetworks.com/ja/tag/containers-ja/ "Containers") * [CVE-2026-31431](https://unit42.paloaltonetworks.com/ja/tag/cve-2026-31431/ "CVE-2026-31431") * [Kubernetes](https://unit42.paloaltonetworks.com/ja/tag/kubernetes-ja/ "Kubernetes") [今すぐ読む ![Right arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-right-arrow-withtail.svg)](https://unit42.paloaltonetworks.com/ja/cve-2026-31431-copy-fail/ "Copy Fail:ここ数年で最も深刻なLinuxの脅威について必要な知識") ![Pictorial representation of BeyondTrust vulnerability CVE-2026-1731. Digital art depicting a stylized mountain range with vibrant blue and red hues. The peaks are accentuated by glowing particles and an abstract, starry backdrop, creating a futuristic landscape.](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/02/14_Overview_1920x900-786x368.jpg) [![category icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2024/07/top-threats.svg)主なサイバー脅威](https://unit42.paloaltonetworks.com/ja/category/top-cyberthreats-ja/) 2026年2月19日 [#### BeyondTrustの深刻な脆弱性（CVE-2026-1731）の悪用においてVShellおよびSparkRATを確認](https://unit42.paloaltonetworks.com/ja/beyondtrust-cve-2026-1731/) * [Bash](https://unit42.paloaltonetworks.com/ja/tag/bash-ja/ "bash") * [CVE-2026-1731](https://unit42.paloaltonetworks.com/ja/tag/cve-2026-1731/ "CVE-2026-1731") * [Powershell](https://unit42.paloaltonetworks.com/ja/tag/powershell-ja/ "Powershell") [今すぐ読む ![Right arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-right-arrow-withtail.svg)](https://unit42.paloaltonetworks.com/ja/beyondtrust-cve-2026-1731/ "BeyondTrustの深刻な脆弱性（CVE-2026-1731）の悪用においてVShellおよびSparkRATを確認") ![](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/02/AdobeStock_1020436911-786x440.jpeg) [![category icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2024/07/top-threats.svg)主なサイバー脅威](https://unit42.paloaltonetworks.com/ja/category/top-cyberthreats-ja/) 2026年2月17日 [#### 野放し状態で悪用されているIvanti EPMMの深刻な脆弱性](https://unit42.paloaltonetworks.com/ja/ivanti-cve-2026-1281-cve-2026-1340/) * [CVE-2026-1281](https://unit42.paloaltonetworks.com/ja/tag/cve-2026-1281/ "CVE-2026-1281") * [CVE-2026-1340](https://unit42.paloaltonetworks.com/ja/tag/cve-2026-1340/ "CVE-2026-1340") * [Ivanti](https://unit42.paloaltonetworks.com/ja/tag/ivanti-ja/ "Ivanti") [今すぐ読む ![Right arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-right-arrow-withtail.svg)](https://unit42.paloaltonetworks.com/ja/ivanti-cve-2026-1281-cve-2026-1340/ "野放し状態で悪用されているIvanti EPMMの深刻な脆弱性") ![Pictorial representation of CVE-2025-0921. Digital illustration of a map of North America with interconnected glowing lines and dots symbolizing network connections across the continent.](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/01/06_Vulnerabilities_1920x900-2-1-786x368.jpg) [![category icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2024/06/icon-threat-research.svg)脅威リサーチ](https://unit42.paloaltonetworks.com/ja/category/threat-research-ja/) 2026年1月30日 [#### SCADAシステムに存在する特権ファイルシステムの脆弱性](https://unit42.paloaltonetworks.com/ja/iconics-suite-cve-2025-0921/) * [CVE-2025-0921](https://unit42.paloaltonetworks.com/ja/tag/cve-2025-0921/ "CVE-2025-0921") * [Privilege escalation](https://unit42.paloaltonetworks.com/ja/tag/privilege-escalation-ja/ "privilege escalation") * [SCADA](https://unit42.paloaltonetworks.com/ja/tag/scada/ "SCADA") [今すぐ読む ![Right arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-right-arrow-withtail.svg)](https://unit42.paloaltonetworks.com/ja/iconics-suite-cve-2025-0921/ "SCADAシステムに存在する特権ファイルシステムの脆弱性") ![Pictorial representation of remote code execution in AI and machine learning libraries. Close-up of a woman wearing glasses and focusing intently on a computer screen.](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/01/05_Vulnerabilities_1920x900-786x368.jpg) [![category icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2024/06/icon-threat-research.svg)脅威リサーチ](https://unit42.paloaltonetworks.com/ja/category/threat-research-ja/) 2026年1月13日 [#### 最新のAI/MLフォーマットとライブラリによるリモート コード実行](https://unit42.paloaltonetworks.com/ja/rce-vulnerabilities-in-ai-python-libraries/) * [Apple](https://unit42.paloaltonetworks.com/ja/tag/apple-ja/ "Apple") * [CVE-2025-23304](https://unit42.paloaltonetworks.com/ja/tag/cve-2025-23304/ "CVE-2025-23304") * [CVE-2026-22584](https://unit42.paloaltonetworks.com/ja/tag/cve-2026-22584/ "CVE-2026-22584") [今すぐ読む ![Right arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-right-arrow-withtail.svg)](https://unit42.paloaltonetworks.com/ja/rce-vulnerabilities-in-ai-python-libraries/ "最新のAI/MLフォーマットとライブラリによるリモート コード実行") ![Pictorial representation of MongoBleed, CVE-2025-14847. Digital image featuring a glowing padlock icon superimposed on a background of streaming blue binary code, symbolizing cybersecurity.](https://unit42.paloaltonetworks.com/wp-content/uploads/2026/01/AdobeStock_233494953-786x429.jpeg) [![category icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2024/07/top-threats.svg)主なサイバー脅威](https://unit42.paloaltonetworks.com/ja/category/top-cyberthreats-ja/) 2026年1月13日 [#### 脅威ブリーフ: MongoDB の脆弱性 (CVE-2025-14847)](https://unit42.paloaltonetworks.com/ja/mongobleed-cve-2025-14847/) * [CVE-2025-14847](https://unit42.paloaltonetworks.com/ja/tag/cve-2025-14847/ "CVE-2025-14847") * [MongoDB](https://unit42.paloaltonetworks.com/ja/tag/mongodb-ja/ "MongoDB") [今すぐ読む ![Right arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-right-arrow-withtail.svg)](https://unit42.paloaltonetworks.com/ja/mongobleed-cve-2025-14847/ "脅威ブリーフ: MongoDB の脆弱性 (CVE-2025-14847)") ![Pictorial representation of CVE-2025-55182 (React) and CVE-2025-66478 (Next.js). Close-up of a digital display on electronic equipment with illuminated text reading "SYSTEM HACKED" in red, set against a blurred background of blue and red lights.](https://unit42.paloaltonetworks.com/wp-content/uploads/2025/12/02_Vulnerabilities_1920x900-786x368.jpg) [![category icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2024/07/top-threats.svg)主なサイバー脅威](https://unit42.paloaltonetworks.com/ja/category/top-cyberthreats-ja/) 2025年12月12日 [#### React Server Components における重大な脆弱性の悪用 (12月12日更新)](https://unit42.paloaltonetworks.com/ja/cve-2025-55182-react-and-cve-2025-66478-next/) * [Cobalt Strike](https://unit42.paloaltonetworks.com/ja/tag/cobalt-strike-ja/ "Cobalt Strike") * [CVE-2025-55182](https://unit42.paloaltonetworks.com/ja/tag/cve-2025-55182-ja/ "CVE-2025-55182") * [CVE-2025-66478](https://unit42.paloaltonetworks.com/ja/tag/cve-2025-66478-ja/ "CVE-2025-66478") [今すぐ読む ![Right arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-right-arrow-withtail.svg)](https://unit42.paloaltonetworks.com/ja/cve-2025-55182-react-and-cve-2025-66478-next/ "React Server Components における重大な脆弱性の悪用 (12月12日更新)") ![Pictorial representation of an authentication coercion attack. Panoramic view of a city skyline at night, featuring vibrant light beams from skyscrapers and a deep blue sky.](https://unit42.paloaltonetworks.com/wp-content/uploads/2025/11/07_Vulnerabilities_1920x900-786x368.jpg) [![category icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2024/06/icon-threat-research.svg)脅威リサーチ](https://unit42.paloaltonetworks.com/ja/category/threat-research-ja/) 2025年11月10日 [#### 新たなアップデート。進化し続ける強制認証テクニック](https://unit42.paloaltonetworks.com/ja/authentication-coercion/) * [Mimikatz](https://unit42.paloaltonetworks.com/ja/tag/mimikatz-ja/ "Mimikatz") * [PrintNightmare](https://unit42.paloaltonetworks.com/ja/tag/printnightmare-ja/ "PrintNightmare") * [Privilege escalation](https://unit42.paloaltonetworks.com/ja/tag/privilege-escalation-ja/ "privilege escalation") [今すぐ読む ![Right arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-right-arrow-withtail.svg)](https://unit42.paloaltonetworks.com/ja/authentication-coercion/ "新たなアップデート。進化し続ける強制認証テクニック") ![Pictorial representation of LANDFALL spyware. An illustration of a glowing red warning icon centered on a detailed blue circuit board background, representing a vulnerability in Samsung Galaxy devices.](https://unit42.paloaltonetworks.com/wp-content/uploads/2025/11/09_Nation-State-cyberattacks_1920x900-786x368.jpg) [![category icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2024/06/icon-threat-research.svg)脅威リサーチ](https://unit42.paloaltonetworks.com/ja/category/threat-research-ja/) 2025年11月7日 [#### LANDFALL: Samsungデバイスを標的とするエクスプロイト チェーンで使用される、新種の商用グレードAndroidスパイウェア](https://unit42.paloaltonetworks.com/ja/landfall-is-new-commercial-grade-android-spyware/) * [Android](https://unit42.paloaltonetworks.com/ja/tag/android-ja/ "Android") * [Apple](https://unit42.paloaltonetworks.com/ja/tag/apple-ja/ "Apple") * [CVE-2025-21042](https://unit42.paloaltonetworks.com/ja/tag/cve-2025-21042-ja/ "CVE-2025-21042") [今すぐ読む ![Right arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-right-arrow-withtail.svg)](https://unit42.paloaltonetworks.com/ja/landfall-is-new-commercial-grade-android-spyware/ "LANDFALL: Samsungデバイスを標的とするエクスプロイト チェーンで使用される、新種の商用グレードAndroidスパイウェア") ![Pictorial representation of CVE-2025-59287. Digital image of a glowing padlock symbol representing cybersecurity on a network grid with blue and orange lights.](https://unit42.paloaltonetworks.com/wp-content/uploads/2025/10/08_DNS_Overview_1920x900-786x368.jpg) [![category icon](https://unit42.paloaltonetworks.com/wp-content/uploads/2024/07/top-threats.svg)主なサイバー脅威](https://unit42.paloaltonetworks.com/ja/category/top-cyberthreats-ja/) 2025年11月3日 [#### Microsoft WSUSのリモートコード実行の脆弱性（CVE-2025-59287）、実環境における活発な悪用を確認（11月3日更新）](https://unit42.paloaltonetworks.com/ja/microsoft-cve-2025-59287/) * [CVE-2025-59287](https://unit42.paloaltonetworks.com/ja/tag/cve-2025-59287-ja/ "CVE-2025-59287") * [Microsoft](https://unit42.paloaltonetworks.com/ja/tag/microsoft-ja/ "Microsoft") * [Microsoft Vulnerability](https://unit42.paloaltonetworks.com/ja/tag/microsoft-vulnerability-ja/ "Microsoft Vulnerability") [今すぐ読む ![Right arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-right-arrow-withtail.svg)](https://unit42.paloaltonetworks.com/ja/microsoft-cve-2025-59287/ "Microsoft WSUSのリモートコード実行の脆弱性（CVE-2025-59287）、実環境における活発な悪用を確認（11月3日更新）") * ![Slider arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/slider-arrow-left.svg) * ![Slider arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/slider-arrow-left.svg) ![Close button](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/close-modal.svg) ![Enlarged Image]() ![Newsletter](https://unit42.paloaltonetworks.com/wp-content/uploads/2025/04/Unit-42_get-updates-banner.png) ![UNIT 42 Small Logo](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/palo-alto-logo-small.svg) Unit 42 からの最新情報を取得 ## 進化する脅威の状況を常に先取り メール アドレス 本フォームを送信することにより、[利用規約](https://www.paloaltonetworks.jp/legal-notices/terms-of-use)に同意し、[プライバシー ポリシー](https://www.paloaltonetworks.jp/legal-notices/privacy)を承認したことになります。 本サイトは reCAPTCHA で保護されており、Googleの[プライバシー ポリシー](https://policies.google.com/privacy) と[サービス利用規約](https://policies.google.com/terms)が適用されます。 Invalid captcha! サブスクライブ ![Right Arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/right-arrow.svg) ![loader](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-loader.svg) {#footer} 製品とサービス * [AI利用ネットワーク セキュリティ プラットフォーム](https://www.paloaltonetworks.jp/network-security) * [AIのセキュア バイ デザイン](https://www.paloaltonetworks.jp/precision-ai-security/secure-ai-by-design) * [Prisma AIRS](https://www.paloaltonetworks.jp/prisma/prisma-ai-runtime-security) * [AI Access Security](https://www.paloaltonetworks.jp/sase/ai-access-security) * [クラウド提供型セキュリティ サービス](https://www.paloaltonetworks.jp/network-security/security-subscriptions) * [Advanced Threat Prevention](https://www.paloaltonetworks.jp/network-security/advanced-threat-prevention) * [Advanced URL Filtering](https://www.paloaltonetworks.jp/network-security/advanced-url-filtering) * [Advanced WildFire](https://www.paloaltonetworks.jp/network-security/advanced-wildfire) * [Advanced DNS Security](https://www.paloaltonetworks.jp/network-security/advanced-dns-security) * [Enterprise Data Loss Prevention](https://www.paloaltonetworks.jp/sase/enterprise-data-loss-prevention) * [Enterprise IoT Security](https://www.paloaltonetworks.jp/content/pan/ja_JP/network-security/enterprise-iot-security) * [Medical IoT Security](https://www.paloaltonetworks.jp/network-security/medical-device-security) * [Industrial OT Security](https://www.paloaltonetworks.jp/content/pan/ja_JP/network-security/industrial-ot-security) * [SaaS Security](https://www.paloaltonetworks.jp/sase/saas-security) * [次世代ファイアウォール](https://www.paloaltonetworks.jp/network-security/next-generation-firewall) * [ハードウェア ファイアウォール](https://www.paloaltonetworks.jp/network-security/hardware-firewall-innovations) * [ソフトウェア ファイアウォール](https://www.paloaltonetworks.jp/network-security/software-firewalls) * [Strata Cloud Manager](https://www.paloaltonetworks.jp/network-security/strata-cloud-manager) * [SD-WAN for NGFW](https://www.paloaltonetworks.jp/network-security/sd-wan-subscription) * [PAN-OS](https://www.paloaltonetworks.jp/network-security/pan-os) * [Panorama](https://www.paloaltonetworks.jp/network-security/panorama) * [セキュア アクセス サービス エッジ](https://www.paloaltonetworks.jp/sase) * [Prisma SASE](https://www.paloaltonetworks.jp/sase) * [App Acceleration](https://www.paloaltonetworks.jp/sase/app-acceleration) * [自律型デジタルエクスペリエンス管理](https://www.paloaltonetworks.jp/sase/adem) * [Enterprise DLP](https://www.paloaltonetworks.jp/sase/enterprise-data-loss-prevention) * [Prisma Access](https://www.paloaltonetworks.jp/sase/access) * [Prisma Browser](https://www.paloaltonetworks.jp/sase/prisma-browser) * [Prisma SD-WAN](https://www.paloaltonetworks.jp/sase/sd-wan) * [リモート ブラウザ分離](https://www.paloaltonetworks.jp/sase/remote-browser-isolation) * [SaaS Security](https://www.paloaltonetworks.jp/sase/saas-security) * [AI駆動型セキュリティ運用プラットフォーム](https://www.paloaltonetworks.jp/cortex) * [Cloud Security](https://www.paloaltonetworks.jp/cortex/cloud) * [Cortex Cloud](https://www.paloaltonetworks.jp/cortex/cloud) * [Application Security](https://www.paloaltonetworks.jp/cortex/cloud/application-security) * [Cloud Posture Security](https://www.paloaltonetworks.jp/cortex/cloud/cloud-posture-security) * [Cloud Runtime Security](https://www.paloaltonetworks.jp/cortex/cloud/runtime-security) * [Prisma Cloud](https://www.paloaltonetworks.jp/prisma/cloud) * [AI駆動型SOC](https://www.paloaltonetworks.jp/cortex) * [Cortex XSIAM](https://www.paloaltonetworks.jp/cortex/cortex-xsiam) * [Cortex XDR](https://www.paloaltonetworks.jp/cortex/cortex-xdr) * [Cortex XSOAR](https://www.paloaltonetworks.jp/cortex/cortex-xsoar) * [Cortex Xpanse](https://www.paloaltonetworks.jp/cortex/cortex-xpanse) * [Unit 42マネージド ディテクション\&レスポンス](https://www.paloaltonetworks.jp/cortex/managed-detection-and-response) * [マネージドXSIAM](https://www.paloaltonetworks.jp/cortex/managed-xsiam) * [次世代のアイデンティティ セキュリティ](https://www.paloaltonetworks.jp/idira) * [特権アクセス管理](https://www.paloaltonetworks.jp/idira/human/privileged-access-management) * [アイデンティティ管理とアクセス管理](https://www.paloaltonetworks.jp/idira/human/identity-and-access-management) * [Endpoint Privilege Manager](https://www.paloaltonetworks.jp/idira/human/endpoint-privilege-manager) * [アイデンティティ ガバナンス](https://www.paloaltonetworks.jp/idira/human/identity-governance) * [従業員パスワード管理](https://www.paloaltonetworks.jp/idira/human/workforce-password-management) * [エージェンティック アイデンティティ](https://www.paloaltonetworks.jp/idira/agentic) * [シークレット管理](https://www.paloaltonetworks.jp/idira/machine/secrets-management) * [統合型シークレット ガバナンス](https://www.paloaltonetworks.jp/idira/machine/unified-secrets-governance) * [アプリケーションの認証情報配信](https://www.paloaltonetworks.jp/idira/machine/application-credentials-delivery) * [ベンダーの特権アクセス](https://www.paloaltonetworks.jp/idira/human/vendor-privileged-access) * [脅威インテリジェンス\&インシデント レスポンス サービス](https://www.paloaltonetworks.jp/unit42) * [予防評価](https://www.paloaltonetworks.jp/unit42/assess) * [インシデント レスポンス](https://www.paloaltonetworks.jp/unit42/respond) * [セキュリティ戦略を変革](https://www.paloaltonetworks.jp/unit42/transform) * [脅威インテリジェンスについて](https://www.paloaltonetworks.jp/unit42/threat-intelligence-partners) 会社名 * [パロアルトネットワークスについて](https://www.paloaltonetworks.jp/about-us) * [採用情報](https://jobs.paloaltonetworks.com/en/) * [お問合せ](https://www.paloaltonetworks.jp/company/contact-sales) * [企業責任](https://www.paloaltonetworks.com/about-us/corporate-responsibility) * [お客様向け](https://www.paloaltonetworks.jp/customers) * [IR](https://investors.paloaltonetworks.com/) * [拠点](https://www.paloaltonetworks.com/about-us/locations) * [ニュースルーム](https://www.paloaltonetworks.jp/company/newsroom) 人気のあるリンク * [ブログ](https://www.paloaltonetworks.com/blog/?lang=ja) * [コミュニティ](https://www.paloaltonetworks.com/communities) * [コンテンツライブラリ](https://www.paloaltonetworks.jp/resources) * [Cyberpedia](https://www.paloaltonetworks.jp/cyberpedia) * [イベントセンター](https://events.paloaltonetworks.com/) * [電子メール設定の管理](https://start.paloaltonetworks.com/preference-center) * [製品A〜Z](https://www.paloaltonetworks.jp/products/products-a-z) * [製品認証](https://www.paloaltonetworks.com/legal-notices/trust-center/compliance) * [脆弱性の報告](https://www.paloaltonetworks.com/security-disclosure) * [サイトマップ](https://www.paloaltonetworks.jp/sitemap) * [テクニカル ドキュメント](https://docs.paloaltonetworks.com/) * [Unit 42](https://unit42.paloaltonetworks.jp/) * [個人情報の販売および共有禁止](https://panwedd.exterro.net/portal/dsar.htm?target=panwedd) ![Palo Alto Networks Logo](https://www.paloaltonetworks.jp/etc/clientlibs/clean/imgs/pan-logo-dark.svg) * [プライバシー](https://www.paloaltonetworks.jp/legal-notices/privacy) * [トラスト センター](https://www.paloaltonetworks.jp/legal-notices/trust-center) * [利用規約](https://www.paloaltonetworks.jp/legal-notices/terms-of-use) * [ドキュメント](https://www.paloaltonetworks.jp/legal-notices) Copyright © 2026 Palo Alto Networks. All Rights Reserved * [![](https://www.paloaltonetworks.jp/etc/clientlibs/clean/imgs/social/youtube-black.svg)](https://www.youtube.com/user/paloaltonetworks) * [![](https://www.paloaltonetworks.jp/etc/clientlibs/clean/imgs/social/twitter-x-black.svg)](https://twitter.com/PaloAltoNtwks) * [![](https://www.paloaltonetworks.jp/etc/clientlibs/clean/imgs/social/facebook-black.svg)](https://www.facebook.com/PaloAltoNetworks/) * [![](https://www.paloaltonetworks.jp/etc/clientlibs/clean/imgs/social/linkedin-black.svg)](https://www.linkedin.com/company/palo-alto-networks) * [![](https://www.paloaltonetworks.jp/content/dam/pan/en_US/images/icons/podcast.svg)](https://unit42.paloaltonetworks.com/unit-42-threat-vector-podcast/) * JP Select your language ![Play](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/player-play-icon.svg) ![Pause](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/player-pause-icon1.svg) ![Minimize](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-minimize.svg) ![Close button](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/close-modal.svg) ### Default Heading Read the article ![Right Arrow](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/right-arrow.svg) Seekbar ![Play](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/player-play-icon.svg) ![Pause](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/player-pause-icon1.svg) ![Volume](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-volume.svg) Volume ![Minimize](https://unit42.paloaltonetworks.com/wp-content/themes/unit42-v6/dist/images/icons/icon-minimize.svg)