Integer overflow in Microsoft products - CVE-2026-69742
Published: September 8, 2026
Vulnerability identifier: #VU147927
CSH Severity: High
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-69742
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to integer overflow or wraparound in Microsoft Office Publisher when opening a specially crafted file. A remote attacker can trick the victim into opening a specially crafted file to execute arbitrary code.
The Preview Pane is not an attack vector.
Affected software
Microsoft 365 Apps for Enterprise
Microsoft Publisher
Microsoft Office
Microsoft Publisher
Microsoft Office
How to mitigate CVE-2026-69742
Install security update from vendor's website.
Microsoft 365 Apps for Enterprise - update to 16.0.20326.20138
Microsoft Publisher - update to 16.0.5569.1000
Microsoft Office - addressed in versions 16.0.10417.20207, 16.0.14334.20906, 16.0.17932.20976
Microsoft Publisher - update to 16.0.5569.1000
Microsoft Office - addressed in versions 16.0.10417.20207, 16.0.14334.20906, 16.0.17932.20976