Sep 2026: Microsoft Office Publisher Remote Code Execution Vulnerability
CVE-2026-69742 Published on September 8, 2026
Microsoft Office Publisher Remote Code Execution Vulnerability
Integer overflow or wraparound in Microsoft Office Publisher allows an unauthorized attacker to execute code over a network.
Weakness Type
Integer Overflow or Wraparound
The software performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. An integer overflow or wraparound occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may wrap to become a very small or negative number. While this may be intended behavior in circumstances that rely on wrapping, it can have security consequences if the wrap is unexpected. This is especially the case if the integer overflow can be triggered using user-supplied inputs. This becomes security-critical when the result is used to control looping, make a security decision, or determine the offset or size in behaviors such as memory allocation, copying, concatenation, etc.
Products Associated with CVE-2026-69742
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Affected Versions
Microsoft 365 Apps for Enterprise:- Version 16.0.1 and below 16.0.20326.20138 is affected.
- Version 19.0.0 and below 16.0.10417.20207 is affected.
- Version 16.0.1 and below 16.0.14334.20906 is affected.
- Version 16.0.0 and below 16.0.17932.20976 is affected.
- Version 16.0.0 and below 16.0.5569.1000 is affected.