Main Vulnerability Database Vulnerabilities #VU121459

Untrusted Pointer Dereference in Microsoft products - CVE-2026-20948

Published: January 14, 2026

Vulnerability identifier: #VU121459

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-2026-20948

CWE-ID: CWE-822

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

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

The vulnerability exists due to untrusted pointer dereference in Microsoft Word. A remote attacker can trick a victim to open a specially crafted file and execute arbitrary code on the system.

Affected software

Microsoft 365 Apps for Enterprise
Microsoft Word
Microsoft Office
Microsoft SharePoint Enterprise Server
Microsoft SharePoint Server
Microsoft Office LTSC

How to mitigate CVE-2026-20948

Install updates from vendor's website.

External References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20948

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