CSIRTS // UNIFIED SECURITY ADVISORY FEEDSYS ● ONLINE · POWERED BY INTELFUSIONS.COM

← Back to feed

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

criticalknown exploitedpublic exploitCVE-2025-26633
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Microsoft Windows Management Console (MMC) contains an improper neutralization vulnerability that allows an unauthorized attacker to bypass a security feature locally.

CSIRTS triage

vendor: Microsoftproduct: Windows Management Console (MMC)Authentication bypass
What
This vulnerability allows an unauthorized attacker to bypass a security feature locally.
Who is affected
Unauthorized local attackers on systems running MMC are affected.
Urgency
Remediation is urgent due to active exploitation and critical severity.
Action
Update to the latest version of MMC to mitigate this vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

⚡ Watch Windows Management Console (MMC)

Get an email when a new Windows Management Console (MMC) advisory drops — max one per day, one-click unsubscribe.

Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2025-03-11
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2025-26633

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2025-26633coverage & exploitation statusNVD · CVE.org

Recent advisories for Microsoft Windows Management

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from CISA Known Exploited Vulnerabilities