← Database
CVE-2026-20957
HIGH
CVSS: 7.8
Published: 2026-01-13
Modified: 2026-06-17
Description
Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Affected Platforms
Microsoft 365 AppsMicrosoft Office Online ServerMicrosoft Office Long Term Servicing ChannelMicrosoft ExcelMicrosoft Office
Weakness Type
CWE-122, CWE-191