SARA / Free Tools / KEV / CVE-2025-26633

CVE-2025-26633 on CISA KEV

Improper neutralization in Microsoft Management Console allows an unauthorized attacker to bypass a security feature locally.

CISA KEV — Actively Exploited

Microsoft Windows Management Console (MMC) Improper Neutralization Vulnerability

Vendor / Product
— / Microsoft / Windows
Added to KEV
2025-03-11
BOD 22-01 due
2025-04-01
Ransomware use
Known
CVSS / EPSS
7.0 HIGH · EPSS 7.82%

01What CISA says about this vulnerability

Improper neutralization in Microsoft Management Console allows an unauthorized attacker to bypass a security feature locally.

02Required action — verbatim from CISA

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

03Notes & references

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

VendorProductVersions
MicrosoftWindows 10 Version 150710.0.10240.0
MicrosoftWindows 10 Version 160710.0.14393.0
MicrosoftWindows 10 Version 180910.0.17763.0
MicrosoftWindows 10 Version 21H210.0.19044.0
MicrosoftWindows 10 Version 22H210.0.19045.0
MicrosoftWindows 11 version 22H210.0.22621.0
MicrosoftWindows 11 version 22H310.0.22631.0
MicrosoftWindows 11 Version 23H210.0.22631.0
MicrosoftWindows 11 Version 24H210.0.26100.0
MicrosoftWindows Server 2008 R2 Service Pack 16.1.7601.0
MicrosoftWindows Server 2008 R2 Service Pack 1 (Server Core installation)6.1.7601.0
MicrosoftWindows Server 2008 Service Pack 26.0.6003.0
MicrosoftWindows Server 2008 Service Pack 2 (Server Core installation)6.0.6003.0
MicrosoftWindows Server 20126.2.9200.0
MicrosoftWindows Server 2012 (Server Core installation)6.2.9200.0
MicrosoftWindows Server 2012 R26.3.9600.0
MicrosoftWindows Server 2012 R2 (Server Core installation)6.3.9600.0
MicrosoftWindows Server 201610.0.14393.0
MicrosoftWindows Server 2016 (Server Core installation)10.0.14393.0
MicrosoftWindows Server 201910.0.17763.0
MicrosoftWindows Server 2019 (Server Core installation)10.0.17763.0
MicrosoftWindows Server 202210.0.20348.0
MicrosoftWindows Server 2022, 23H2 Edition (Server Core installation)10.0.25398.0
MicrosoftWindows Server 202510.0.26100.0
MicrosoftWindows Server 2025 (Server Core installation)10.0.26100.0

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

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