How severe is CVE-2025-26633?

CVE-2025-26633 has a CVSS 3.1 base score of 7 (HIGH). EPSS estimates a 30.4% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2025-26633: Microsoft Management Console Security Feature Bypass

CISA Known Exploited Vulnerabilities

Microsoft Windows Management Console (MMC) Improper Neutralization Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2025-03-11

Remediation due

2025-04-01

Ransomware

Known use

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

CISA notes
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-26633 ; https://nvd.nist.gov/vuln/detail/CVE-2025-26633

Description

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

Severity

CVSS 3.1 · CNA7 HIGH

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

SSVC · CISA-ADP

Exploitationactive

Automatableno

Technical impacttotal

Exploitation Context

as of October 14, 2026

All KEV statistics→

CISA added CVE-2025-26633 to the KEV catalog on the day its CVE record was published. The median for entries added in 2025 is 26 days.
It is one of 391 Microsoft entries in the CISA KEV catalog, and one of 39 added in 2025.
Its current EPSS score (30.4%) is higher than that of 42% of CISA KEV entries.

Affected Products

Vendor	Product	Affected versions
Microsoft	Microsoft Windows 10 Version 1507	10.0.10240.0 to <10.0.10240.20947
Microsoft	Microsoft Windows 10 Version 1607	10.0.14393.0 to <10.0.14393.7876
Microsoft	Microsoft Windows 10 Version 1809	10.0.17763.0 to <10.0.17763.7009
Microsoft	Microsoft Windows 10 Version 21H2	10.0.19044.0 to <10.0.19044.5608
Microsoft	Microsoft Windows 10 Version 22H2	10.0.19045.0 to <10.0.19045.5608
Microsoft	Microsoft Windows 11 version 22H2	10.0.22621.0 to <10.0.22621.5039
Microsoft	Microsoft Windows 11 version 22H3	10.0.22631.0 to <10.0.22631.5039
Microsoft	Microsoft Windows 11 Version 23H2	10.0.22631.0 to <10.0.22631.5039
Microsoft	Microsoft Windows 11 Version 24H2	10.0.26100.0 to <10.0.26100.3476
Microsoft	Microsoft Windows Server 2008 R2 Service Pack 1	6.1.7601.0 to <6.1.7601.27618
Microsoft	Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation)	6.1.7601.0 to <6.1.7601.27618
Microsoft	Microsoft Windows Server 2008 Service Pack 2	6.0.6003.0 to <6.0.6003.23168
Microsoft	Microsoft Windows Server 2008 Service Pack 2 (Server Core installation)	6.0.6003.0 to <6.0.6003.23168
Microsoft	Microsoft Windows Server 2012	6.2.9200.0 to <6.2.9200.25368
Microsoft	Microsoft Windows Server 2012 (Server Core installation)	6.2.9200.0 to <6.2.9200.25368
Microsoft	Microsoft Windows Server 2012 R2	6.3.9600.0 to <6.3.9600.22470
Microsoft	Microsoft Windows Server 2012 R2 (Server Core installation)	6.3.9600.0 to <6.3.9600.22470
Microsoft	Microsoft Windows Server 2016	10.0.14393.0 to <10.0.14393.7876
Microsoft	Microsoft Windows Server 2016 (Server Core installation)	10.0.14393.0 to <10.0.14393.7876
Microsoft	Microsoft Windows Server 2019	10.0.17763.0 to <10.0.17763.7009
Microsoft	Microsoft Windows Server 2019 (Server Core installation)	10.0.17763.0 to <10.0.17763.7009
Microsoft	Microsoft Windows Server 2022	10.0.20348.0 to <10.0.20348.3328
Microsoft	Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)	10.0.25398.0 to <10.0.25398.1486
Microsoft	Microsoft Windows Server 2025	10.0.26100.0 to <10.0.26100.3476
Microsoft	Microsoft Windows Server 2025 (Server Core installation)	10.0.26100.0 to <10.0.26100.3476

References

3 Links

Vendor advisories

Microsoft Management Console Security Feature Bypass Vulnerability

Other references

Record Details

Published

2025-03-11

Last updated

2026-08-05

Assigner (CNA)

microsoft

Credited to

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Tool categories

Application Security Tools

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.

CVE-2025-26633