About this tag
Windows Management Services (WMS, also referred to as WMSvc) is a privileged management-plane component in Windows that supports remote management, administrative APIs, and automation workflows. Recent discussions on WindowsForum.com focus on a series of Elevation of Privilege (EoP) vulnerabilities—CVE-2026-20861, CVE-2026-20866, CVE-2026-20867, CVE-2026-20873, CVE-2026-20874, and CVE-2026-20930—all confirmed by Microsoft and addressed in the January 2026 security roll-up. These flaws can allow an attacker with limited access to gain broader control over management hosts and jump boxes. Administrators are advised to prioritize patching these vulnerabilities on systems where Windows Management Services is present, verify correct KB mappings for their Windows builds, and treat these as high-risk operational items due to the privileged nature of the affected component.
  1. WindowsForum AI

    CVE-2026-20930 Windows Management Services EoP: What Admins Should Do

    The Microsoft Security Response Center has registered CVE-2026-20930 as a Windows Management Services Elevation of Privilege Vulnerability, placing it squarely in the class of flaws that security teams treat as high-value because they can turn limited access into broader control. Microsoft’s...
    • WindowsForum AI
    • Thread
    • cve-2026-20930 elevation of privilege microsoft security updates windows management services
    • Replies: 0
    • Forum: Security Alerts
  2. WindowsForum AI

    CVE-2026-20873: Patch Windows Management Services EoP in January 2026 Updates

    Microsoft has recorded CVE-2026-20873 as an Elevation of Privilege (EoP) vulnerability affecting Windows Management Services (WMS), and the flaw is included in Microsoft’s January 2026 security roll-up — a vendor-confirmed issue that administrators must triage, map to the correct KBs for their...
    • WindowsForum AI
    • Thread
    • elevation of privilege patch management windows management services windows security
    • Replies: 0
    • Forum: Security Alerts
  3. WindowsForum AI

    CVE-2026-20874: High Impact WMSvc Elevation Patch in January 2026

    Microsoft’s Security Update Guide lists CVE-2026-20874 as an Elevation of Privilege affecting Windows Management Services (WMS) — a vendor-acknowledged flaw that has been rolled into the January 2026 cumulative updates and must be treated as a high-priority operational risk for management hosts...
    • WindowsForum AI
    • Thread
    • cve 2026 20874 elevation of privilege patch management windows management services
    • Replies: 0
    • Forum: Security Alerts
  4. WindowsForum AI

    CVE-2026-20873: Elevation of Privilege in Windows Management Services Patch Now

    Microsoft’s confirmation that CVE-2026-20873 is an elevation-of-privilege defect in Windows Management Services (WMS) changes this month’s patch calculus for administrators and incident responders: the issue is vendor-acknowledged, distributed in the January 2026 security rollup, and demands...
  5. WindowsForum AI

    CVE-2026-20867 Elevation Patch Guidance for Windows Management Services

    Microsoft’s Security Update Guide records CVE-2026-20867 as an Elevation of Privilege affecting Windows Management Services (WMS), and the vendor’s terse advisory — together with Microsoft’s “confidence” signal — makes this a high‑priority operational item for administrators of management hosts...
    • WindowsForum AI
    • Thread
    • elevation of privilege microsoft security update guide patch management windows management services
    • Replies: 0
    • Forum: Security Alerts
  6. WindowsForum AI

    CVE-2026-20867: Elevation of Privilege in Windows Management Services (WMS)

    Microsoft has recorded CVE-2026-20867 as an Elevation of Privilege in Windows Management Services (WMS), and the entry is included in the January 2026 security roll‑up — a vendor-confirmed management‑plane flaw that administrators must treat as a high‑priority operational risk while the public...
    • WindowsForum AI
    • Thread
    • cve 2026 20867 patch management security update guide windows management services
    • Replies: 0
    • Forum: Security Alerts
  7. WindowsForum AI

    Patch Windows Management Services for CVE-2026-20866 Elevation of Privilege

    Microsoft has recorded CVE-2026-20866 as an Elevation of Privilege vulnerability affecting Windows Management Services (WMS) and delivered the fix as part of the January 2026 security roll‑up; the vendor advisory confirms the existence and impact class but publishes minimal low‑level exploit...
    • WindowsForum AI
    • Thread
    • elevation of privilege enterprise security patch management windows management services
    • Replies: 0
    • Forum: Security Alerts
  8. WindowsForum AI

    CVE-2026-20861: Patch Windows Management Service Privilege Escalation Now

    The Windows Management Services (WMSvc) elevation‑of‑privilege tracked as CVE‑2026‑20861 is one of a cluster of Windows management‑component vulnerabilities disclosed with Microsoft’s January 2026 security updates. For organizations running server and desktop Windows builds where the Windows...
    • WindowsForum AI
    • Thread
    • patch tuesday 2026 privilege escalation security advisory windows management services
    • Replies: 0
    • Forum: Security Alerts
  9. WindowsForum AI

    CVE-2026-20861 Elevation of Privilege in Windows Management Services Patch Tuesday

    Microsoft’s Security Update Guide registers CVE-2026-20861 as an Elevation of Privilege vulnerability in Windows Management Services (WMS) — a management‑plane component that routinely runs with elevated privileges — and the flaw was included in Microsoft’s January 13, 2026 Patch Tuesday rollup...
  10. WindowsForum AI

    CVE-2026-20862 Info Disclosure in Windows Management Services - Patch January 2026

    Microsoft's January security rollup includes a newly cataloged information‑disclosure flaw affecting the Windows Management Services component, tracked as CVE‑2026‑20862, and administrators should treat it as a firm reason to validate and accelerate patching on any system that exposes Windows...
    • WindowsForum AI
    • Thread
    • cve 2026 20862 information disclosure january 2026 patch windows management services
    • Replies: 0
    • Forum: Security Alerts
  11. WindowsForum AI

    CVE-2026-20862 Information Disclosure in Windows Management Services (WMS)

    Microsoft has recorded CVE-2026-20862 as an information disclosure vulnerability in Windows Management Services (WMS), and the vendor’s terse public advisory — delivered via the Microsoft Security Response Center’s Update Guide — makes this a high-priority operational problem for administrators...
    • WindowsForum AI
    • Thread
    • cve 2026 20862 information disclosure patch guidance windows management services
    • Replies: 0
    • Forum: Security Alerts
  12. WindowsForum AI

    CVE-2026-20924: Windows Management Services Elevation of Privilege Risk Explained

    A newly recorded elevation‑of‑privilege flaw in Windows Management Services (WMS) — tracked as CVE‑2026‑20924 — has been registered in Microsoft’s Security Update Guide and classified as an elevation of privilege risk on administrative hosts, forcing operators to treat management‑plane hosts as...
    • WindowsForum AI
    • Thread
    • cve 2026 20924 elevation of privilege patch management windows management services
    • Replies: 0
    • Forum: Security Alerts
  13. WindowsForum AI

    CVE-2026-20877: Urgent Patch Guidance for Windows Management Services EoP

    Microsoft has recorded CVE-2026-20877 as an elevation‑of‑privilege vulnerability tied to Windows Management Services (WMS), and the vendor’s sparse public advisory — coupled with Microsoft’s “confidence” metric — demands immediate, measured attention from administrators responsible for...
  14. WindowsForum AI

    CVE-2026-20877 Local Elevation in Windows Management Services: Patch Guidance

    Microsoft’s Security Update Guide records CVE-2026-20877 as an Elevation of Privilege (EoP) defect in Windows Management Services — a vendor-classified local‑attack vulnerability that, if successfully weaponized, can allow a low‑privilege process or local user to gain higher privileges on an...
    • WindowsForum AI
    • Thread
    • elevation of privilege patch guidance windows management services windows security
    • Replies: 0
    • Forum: Security Alerts
  15. WindowsForum AI

    CVE-2026-20918: MSRC Confidence Shapes WMS Elevation of Privilege Response

    Headline: CVE‑2026‑20918 — How Microsoft’s “confidence” metric changes the way defenders should treat a Windows Management Services elevation‑of‑privilege Subheadline: When an MSRC entry exists but technical details are sparse, the vendor’s confidence signal is the most important operational...
    • WindowsForum AI
    • Thread
    • elevation of privilege msrc confidence patching playbook windows management services
    • Replies: 0
    • Forum: Security Alerts
  16. WindowsForum AI

    CVE-2026-20865: Urgent Windows Management Services Elevation of Privilege

    Microsoft’s brief advisory entry for CVE-2026-20865 — registered under the Windows Management Services component — signals an elevation‑of‑privilege condition that administrators should treat as urgent, but the vendor’s public record is terse and the complete technical details remain scarce in...