cve-2021-26855
Safeguard articles tagged "cve-2021-26855" — guides, analysis, and best practices for software supply chain and application security.
3 articles
CVE-2021-26855: Microsoft Exchange Server Remote Code Execution Vulnerability
CVE-2021-26855 affects Microsoft Exchange Server and is listed in CISA's Known Exploited Vulnerabilities catalog, meaning exploitation has been observed in the wild. Added 2021-11-03.
ProxyLogon (2021): The Exchange Server Vulnerabilities Behind the HAFNIUM Campaign
A factual retrospective on ProxyLogon (CVE-2021-26855 and related CVEs), a chain of Microsoft Exchange Server vulnerabilities exploited at scale in early 2021, compromising tens of thousands of organizations.
ProxyLogon Microsoft Exchange RCE chain (CVE-2021-26855)
A deep dive into ProxyLogon (CVE-2021-26855 and chain): the unauthenticated Exchange RCE that enabled HAFNIUM and mass ransomware attacks.
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