Description
Exposure of sensitive information to an unauthorized actor in Windows Management Services allows an authorized attacker to disclose information locally.
Published: 2026-01-13
Score: 5.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Local Information Disclosure
Action: Apply Patch
AI Analysis

Impact

The vulnerability resides in Windows Management Services and permits a locally authenticated attacker to read sensitive data that should be protected. This local information disclosure can expose configuration details, credentials, or other confidential information. The weakness is identified as CWE‑200, a classic information‐disclosure flaw.

Affected Systems

Microsoft Windows 10 versions 1809, 21H2, and 22H2; Microsoft Windows 11 versions 22H3, 23H2, 24H2, and 25H2; Microsoft Windows Server editions 2019, 2022 (including Server Core installations), 2025, and the 23H2 Server Core edition. The CVE lists specific builds for 64‑bit and 32‑bit architectures and also includes ARM64 variants for the 23H2, 24H2, and 25H2 Windows 11 releases.

Risk and Exploitability

The CVSS score of 5.5 indicates a medium severity, and the EPSS score is less than 1 %, suggesting a very low likelihood that the exploit is in widespread use. The vulnerability is not listed in the CISA KEV catalog. Exploitation requires a local privileged user with access to the Windows Management Services API; no external or network‑based trigger is documented.

Generated by OpenCVE AI on April 16, 2026 at 08:09 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Install the official Microsoft cumulative update that addresses CVE‑2026‑20862.
  • Restrict access to the Windows Management Services API to only authorized system accounts, services, and administrators.
  • Enable monitoring of WMI activity and review Security Event IDs 4719 and 4720 for anomalous behavior.

Generated by OpenCVE AI on April 16, 2026 at 08:09 UTC.

Tracking

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Advisories

No advisories yet.

History

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

Type Values Removed Values Added
Metrics ssvc

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


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

Type Values Removed Values Added
Description Exposure of sensitive information to an unauthorized actor in Windows Management Services allows an authorized attacker to disclose information locally.
Title Windows Management Services Information Disclosure 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-200
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': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/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: 2026-04-01T13:49:07.090Z

Reserved: 2025-12-03T05:54:20.380Z

Link: CVE-2026-20862

cve-icon Vulnrichment

Updated: 2026-01-13T20:18:03.251Z

cve-icon NVD

Status : Analyzed

Published: 2026-01-13T18:16:15.300

Modified: 2026-01-15T15:33:07.630

Link: CVE-2026-20862

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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

Weaknesses