Security Updates for Microsoft Office Products C2R (February 2026)

The Microsoft Office Products are missing security updates. It is, therefore, affected by a vulnerability: - A security feature bypass vulnerability. Reliance on untrusted inputs in a security decision in Microsoft Office allows an unauthorized attacker to bypass a security feature locally...

Security Updates for Microsoft Office Products C2R (CVE-2026-21509)

The Microsoft Office Products are missing security updates. It is, therefore, affected by a security feature bypass vulnerability. Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number. %NASLMINLEVEL 80900 C Tenable, Inc...

Exploit for Reliance on Untrusted Inputs in a Security Decision in Microsoft

CVE-2026-21509-PoC Educational PoC for CVE‑2026‑21509...