CVE-2026-55040CriticalImmediate
Microsoft SharePoint Server Security Feature Bypass Vulnerability
Severity Critical · Urgency Immediate · Exploited in the wild
Why it matters: Exploited in the wild — CISA fix-by 2026-08-21
⏰ Remediate by Aug 21, 2026 · passed 3d ago
Security Feature Bypass · Critical · CVSS 9.1 · Exploited in the wild. Affects: SharePoint Server.
Affected: SharePoint Server