Buffer over-read in Microsoft 365 Apps for Enterprise and Microsoft Office - CVE-2026-72974
Published: September 9, 2026
Vulnerability identifier: #VU148119
CSH Severity: Medium
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-72974
CWE-ID: CWE-126
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to a buffer over-read in Microsoft Office Excel when processing Excel content. A remote attacker can exploit the vulnerability to disclose sensitive information.
User interaction is required, and the Preview Pane is not an attack vector.
Affected software
Microsoft 365 Apps for Enterprise
Microsoft Office
Microsoft Office
How to mitigate CVE-2026-72974
Install security update from vendor's website.
Microsoft 365 Apps for Enterprise - update to 16.0.20326.20138
Microsoft Office - addressed in versions 16.0.5569.1000, 16.0.10417.20207, 16.0.14334.20906, 16.0.17932.20976
Microsoft Office - addressed in versions 16.0.5569.1000, 16.0.10417.20207, 16.0.14334.20906, 16.0.17932.20976