Use-after-free in Microsoft products - CVE-2026-69797
Published: September 8, 2026
Vulnerability identifier: #VU147959
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-2026-69797
CWE-ID: CWE-416
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 use-after-free in Microsoft Office PowerPoint when handling a specially crafted presentation. A remote attacker can send a specially crafted presentation to a user to execute arbitrary code.
The Preview Pane is an attack vector.
Affected software
Microsoft 365 Apps for Enterprise
Microsoft PowerPoint
Microsoft Office
Microsoft PowerPoint
Microsoft Office
How to mitigate CVE-2026-69797
Install security update from vendor's website.
Microsoft 365 Apps for Enterprise - update to 16.0.20326.20138
Microsoft PowerPoint - update to 16.0.5569.1000
Microsoft Office - addressed in versions 16.0.10417.20207, 16.0.14334.20906, 16.0.17932.20976
Microsoft PowerPoint - update to 16.0.5569.1000
Microsoft Office - addressed in versions 16.0.10417.20207, 16.0.14334.20906, 16.0.17932.20976