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Attackers Exploit SharePoint Authentication Bypass After Public PoC Release

Attackers Exploit SharePoint Authentication Bypass After Public PoC Release

Ravie LakshmananAug 13, 2026Vulnerability / Enterprise Security Threat actors have begun to exploit a newly disclosed Microsoft SharePoint vulnerability following the release of a proof-of-concept (PoC) code. The vulnerability in question is CVE-2026-55040 (CVSS score:…