proxylogon
Safeguard articles tagged "proxylogon" — guides, analysis, and best practices for software supply chain and application security.
4 articles
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.
OWASP A10: Server-Side Request Forgery (SSRF) — A Deep-Dive Guide
Server-Side Request Forgery ranks #10 in the OWASP Top 10 (2021). A deep dive into cloud metadata theft, real CVEs like ProxyLogon, and how to stop SSRF in 2026.
ProxyLogon (CVE-2021-26855) Explained: The Exchange SSRF That Opened a Pre-Auth Door
CVE-2021-26855, ProxyLogon, is a server-side request forgery in Microsoft Exchange that let unauthenticated attackers impersonate the server — the first link in a chain to full remote code execution.
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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