Main Vulnerability Database Vulnerabilities #VU142257

Command Injection in Microsoft products - CVE-2026-65656

Published: August 13, 2026

Vulnerability identifier: #VU142257

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-2026-65656

CWE-ID: CWE-77

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary commands on the system.

The vulnerability exists due to insufficient input validation in Microsoft Office. A remote attacker can trick a victim to open a specially crafted Office file and execute arbitrary commands.

Affected software

Microsoft 365 Apps for Enterprise
Microsoft Office
Microsoft Office LTSC

How to mitigate CVE-2026-65656

Install updates from vendor's website.

External References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65656

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