CVE-2026-20957

Integer underflow wrap or wraparound in Microsoft Office Excel allows an unauthorized attacker to execute code locally...

Security Updates for Microsoft Excel Products C2R (January 2026)

The Microsoft Excel Products are missing a security update. It is, therefore, affected by the following vulnerabilities: - Multiple remote code execution vulnerabilities that attackers can exploit to bypass authentication and execute unauthorized arbitrary commands. CVE-2026-20946, CVE-2026-20950...

CVE-2026-20957

Integer underflow wrap or wraparound in Microsoft Office Excel allows an unauthorized attacker to execute code locally...

CVE-2026-20957 Microsoft Excel Remote Code Execution Vulnerability

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Description of the security update for Excel 2016: January 13, 2026 (KB5002831)

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