Heap-based buffer overflow in Microsoft Office - CVE-2026-97001
Published: October 14, 2026
Vulnerability identifier: #VU155548
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-2026-97001
CWE-ID: CWE-122
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 a heap-based buffer overflow in Microsoft Office Word when processing a malicious Office file. A remote attacker can send a specially crafted Office file and convince the victim to open it to execute arbitrary code.
The Preview Pane is not an attack vector.
Affected software
Microsoft Office
How to mitigate CVE-2026-97001
Install security update from vendor's website.
Microsoft Office - addressed in versions 16.0.14334.20974, 16.0.17932.21056