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CVE-2026-55040
  • Exploitation18 Aug 2026·13 sources

    Attackers Exploit SharePoint Authentication Bypass CVE-2026-55040 Following Public PoC Release

    Microsoft SharePoint is under active attack as threat actors exploit CVE-2026-55040, a critical security feature bypass with a CVSS score of 9.1, immediately after public proof-of-concept code became available.

    SharePointCVE-2026-55040Authentication Bypass+2
    Attackers Exploit SharePoint Authentication Bypass CVE-2026-55040 Following Public PoC Release