CVE-2025-26633: Microsoft Windows Management Console (MMC) Improper Neutralization Vulnerability

CVE-2025-26633 · Severity: critical · CVSS 7 · Exploited in the wild · Published 2025-03-11

Microsoft Windows Management Console (MMC) contains an improper neutralization vulnerability that allows an unauthorized attacker to bypass security features. Exploitation requires local access and user interaction, but it has been observed being exploited in the wild.

Technologies: Microsoft Windows. Vendors: Microsoft.

Quick answers

Is CVE-2025-26633 exploited in the wild?
Yes. CVE-2025-26633 is known to be exploited in the wild, first recorded on 11 March 2025. Treat it as urgent.
How severe is CVE-2025-26633?
Critical severity, with a CVSS score of 7, published 11 March 2025.
Which products and versions are affected?
Microsoft Windows Server 2008 SP2, R2 SP1; Microsoft Windows Server 2012 R2; Microsoft Windows Server 2016 up to (excluding) 10.0.14393.7876; Microsoft Windows Server 2019 up to (excluding) 10.0.17763.7009; and 3 more.
Is there a fix for CVE-2025-26633?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2025-26633 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2025-26633?
Check whether you run Microsoft Windows. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Microsoft Windows Server 2008 SP2, R2 SP1
  • Microsoft Windows Server 2012 R2
  • Microsoft Windows Server 2016 up to (excluding) 10.0.14393.7876
  • Microsoft Windows Server 2019 up to (excluding) 10.0.17763.7009
  • Microsoft Windows Server 2022 23H2 up to (excluding) 10.0.25398.1486
  • Microsoft Windows Server 2025 up to (excluding) 10.0.26100.3403
  • Microsoft Windows 10 1507, 1607, 1809, 21H2, 22H2

Timeline

  • 2025-03-11: disclosed
  • 2025-03-11: kev added: Added to CISA Known Exploited Vulnerabilities Catalog

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