Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Services allows an authorized attacker to elevate privileges locally.
Published: 2026-01-13
Score: 7.8 High
EPSS: < 1% Very Low
KEV: No
Impact: Local Privilege Escalation
Action: Patch Immediately
AI Analysis

Impact

A race condition in Windows Management Services enables a user with local, authorized access to exploit an improper synchronization mechanism, resulting in elevation of privileges on the affected machine. The flaw is characterized by a CWE‑362 race condition and CWE‑416 use‑after‑free weakness, allowing the attacker to gain higher permissions within the same system.

Affected Systems

Microsoft Windows 10 versions 1809, 21H2 and 22H2; Windows 11 versions 22H3, 23H2, 24H2 and 25H2; Windows Server 2019, 2022 and 2025 including Server Core installations. Any affected edition running the Windows Management Services component is vulnerable.

Risk and Exploitability

The vulnerability scores a CVSS of 7.8, indicating High severity. EPSS is reported below 1 %, implying a very low probability of exploitation, and the issue is not in the CISA KEV catalog. The attack requires an attacker to have local, authorized access and invoke Windows Management Services concurrently. While the exploit path is not detailed, the race condition provides a deterministic privilege escalation for an attacker who can manipulate concurrent service operations, warranting prompt remediation.

Generated by OpenCVE AI on April 16, 2026 at 08:05 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the latest Microsoft Security Update that addresses CVE-2026-20874.
  • Restrict Windows Management Services to the minimum set of privileged accounts and disable it for any non‑essential services.
  • Inspect local security policies and audit for any unauthorized attempts to trigger the service or perform privileged actions; adjust permissions to enforce least privileges.

Generated by OpenCVE AI on April 16, 2026 at 08:05 UTC.

Tracking

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Advisories

No advisories yet.

History

Thu, 15 Jan 2026 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft windows 10 21h2
Microsoft windows 10 22h2
Microsoft windows 11 23h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows Server 2022 23h2
CPEs cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*
Vendors & Products Microsoft windows 10 21h2
Microsoft windows 10 22h2
Microsoft windows 11 23h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows Server 2022 23h2

Tue, 13 Jan 2026 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 13 Jan 2026 18:15:00 +0000

Type Values Removed Values Added
Description Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Services allows an authorized attacker to elevate privileges locally.
Title Windows Management Services Elevation of Privilege Vulnerability
First Time appeared Microsoft
Microsoft windows 10 1809
Microsoft windows 10 21h2
Microsoft windows 10 22h2
Microsoft windows 11 23h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows Server 2019
Microsoft windows Server 2022
Microsoft windows Server 2025
Microsoft windows Server 23h2
Weaknesses CWE-362
CWE-416
CPEs cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_23h2:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft windows 10 1809
Microsoft windows 10 21h2
Microsoft windows 10 22h2
Microsoft windows 11 23h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows Server 2019
Microsoft windows Server 2022
Microsoft windows Server 2025
Microsoft windows Server 23h2
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C'}


Subscriptions

Microsoft Windows 10 1809 Windows 10 21h2 Windows 10 21h2 Windows 10 22h2 Windows 10 22h2 Windows 11 23h2 Windows 11 23h2 Windows 11 24h2 Windows 11 24h2 Windows 11 25h2 Windows 11 25h2 Windows Server 2019 Windows Server 2022 Windows Server 2022 23h2 Windows Server 2025 Windows Server 23h2
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-04-01T13:49:12.224Z

Reserved: 2025-12-03T05:54:20.386Z

Link: CVE-2026-20874

cve-icon Vulnrichment

Updated: 2026-01-13T20:06:10.417Z

cve-icon NVD

Status : Analyzed

Published: 2026-01-13T18:16:17.313

Modified: 2026-01-15T21:38:30.433

Link: CVE-2026-20874

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-16T08:15:29Z

Weaknesses