CVE-2021-26858 Archives - Unit42

A conceptual image representing espionage, such as the attempted (but unsuccessful) credential harvesting discussed here.

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Actor Exploits Microsoft Exchange Server Vulnerabilities, Cortex XDR Blocks Harvesting of Credentials

By Robert Falcone
April 15, 2021 at 6:00 AM

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8 min. read

An image representing the concept of tutorials, such as the steps laid out here for remediating the Microsoft Exchange Server vulnerabilities

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Remediation Steps for the Microsoft Exchange Server Vulnerabilities

By Unit 42
March 9, 2021 at 9:40 AM

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4 min. read

Conceptual image representing vulnerabilities, such as the four zero-day Microsoft Exchange Server vulnerabilities discussed in this post.

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Threat Assessment: Active Exploitation of Four Zero-Day Vulnerabilities in Microsoft Exchange Server

By Unit 42
March 3, 2021 at 3:30 PM

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6 min. read