PT-2026-2718 · Microsoft · Windows Management Services+1

Published 2026-01-13 · Updated 2026-01-13 · CVE-2026-20873

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Windows Management Services (affected versions not specified)

Description A race condition exists due to concurrent execution using a shared resource with improper synchronization. This allows an authorized attacker to elevate privileges locally. Approximately 1.5 billion devices worldwide are estimated to be affected.

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

Race Condition

Use After Free

Weakness Enumeration

CWE-362

CWE-416

Related Identifiers

BDU:2026-00409

CVE-2026-20873

Affected Products

Windows

Windows Management Services

References · 7

• https://osv.dev/vulnerability/CVE-2026-20873 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-20873 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20873 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-20873 · Security Note
• https://bdu.fstec.ru/vul/2026-00409 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20873 · Security Note
• https://twitter.com/CVEnew/status/2011181510809043408 · Twitter Post