External Control of File Name or Path in Microsoft Office - CVE-2026-62804
Published: September 8, 2026
Vulnerability identifier: #VU147486
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-2026-62804
CWE-ID: CWE-73
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute code locally.
The vulnerability exists due to external control of file name or path in Microsoft Office Word when opening a malicious Office file. A remote attacker can send a malicious Office file and convince a user to open it to execute code locally.
The Preview Pane is not an attack vector.
Affected software
Microsoft Office
How to mitigate CVE-2026-62804
Install security update from vendor's website.
Microsoft Office - addressed in versions 16.0.5569.1002, 16.0.17932.20960