Microsoft Windows Management Console (MMC) Improper Neutralization Vulnerability
Improper neutralization in Microsoft Management Console allows an unauthorized attacker to bypass a security feature locally.
What happened
Improper neutralization in Microsoft Management Console allows an unauthorized attacker to bypass a security feature locally.
CISA lists it as exploited, added 11 Mar 2025.
Does it affect you
Names Microsoft Windows Server. Enter the product and version you run to place it against the affected range the vendor published.
What to do
- Follow the vendor advisory for the fixed release and any interim mitigation.
msrc.microsoft.com - 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.gov
CISA’s notes for this entry:
Affected, as published to NVD
- ms-winserver
- Microsoft Windows Server: everything below 10.0.14393.7876
The record
- NVD status
- Analyzed
- Published
- 11 Mar 2025, last modified 24 Sep 2026 (NVD)
- Severity
- CVSS 3.1 base score 7.0, High — computed here from the vector; NVD states 7.0.
- Vector
- CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness
- CWE-707 (NVD; names by MITRE)
- Exploitation
- Listed in CISA’s Known Exploited Vulnerabilities catalogue since 11 Mar 2025; federal remediation due 01 Apr 2025. CISA records known use in ransomware campaigns. CISA entry
- Exploit probability
- EPSS 30.4%, 98th percentile — FIRST, scored 23 Oct 2026. FIRST EPSS
- Vendor
- Microsoft · Windows (CISA)
References on the NVD record
- msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26633Vendor Advisory
- vicarius.io/vsociety/posts/cve-2025-26633-security-feature-bypass-in-microsoft-management-console-detection-scriptExploitThird Party Advisory
- vicarius.io/vsociety/posts/cve-2025-26633-security-feature-bypass-in-microsoft-management-console-mitigation-scriptExploitThird Party Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-26633US Government Resource
Sources
The verdict above is computed from the products and versions you entered and the affected ranges the vendor published to NVD. It does not inspect your environment, and this site never reports a product as unaffected: why.