PT-2026-2753 · Microsoft · Office

Devoke + 2 · Published 2026-01-13 · Updated 2026-01-13 · CVE-2026-20953

Positive Technologies (AI Summary)

CVSS v3.1

8.4

High

Base vector

AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Microsoft Office (affected versions not specified)

Description A use after free condition exists in Microsoft Office, potentially allowing an unauthorized attacker to execute code locally.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2026-00386

CVE-2026-20953

Affected Products

Office

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2026-20953 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20953 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-20953 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20953 · Security Note
• https://bdu.fstec.ru/vul/2026-00386 · Security Note
• https://twitter.com/CVEnew/status/2011181534607524019 · Twitter Post
• https://twitter.com/TheHackerWire/status/2011146217506341355 · Twitter Post