Sep 2026: Microsoft Office Word Information Disclosure Vulnerability
CVE-2026-83951 Published on September 8, 2026
Microsoft Office Word Information Disclosure Vulnerability
Buffer over-read in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
Weakness Type
Buffer Over-read
The software reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer. This typically occurs when the pointer or its index is incremented to a position beyond the bounds of the buffer or when pointer arithmetic results in a position outside of the valid memory location to name a few. This may result in exposure of sensitive information or possibly a crash.
Products Associated with CVE-2026-83951
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Affected Versions
Microsoft 365 Apps for Enterprise:- Version 16.0.1 and below 16.0.20326.20136 is affected.
- Version 19.0.0 and below 16.0.10417.20204 is affected.
- Version 16.0.1 and below 16.0.14334.20896 is affected.
- Version 16.0.0 and below 16.0.17932.20960 is affected.
- Version 16.0.1 and below 16.0.5569.1000 is affected.