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CVE-2022-41091: Microsoft Windows Mark of the Web (MOTW) Security Feature Bypass Vulnerability

criticalknown exploitedCVE-2022-41091
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 Mark of the Web (MOTW) contains a security feature bypass vulnerability resulting in a limited loss of integrity and availability of security features.

CSIRTS triage

vendor: Microsoftproduct: WindowsOther
What
Microsoft Windows Mark of the Web (MOTW) contains a security feature bypass vulnerability.
Who is affected
Deployments of Microsoft Windows using MOTW.
Urgency
Remediation is urgent due to active exploitation and critical severity.
Action
Apply the latest security updates from Microsoft.

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

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2022-11-08
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2022-41091

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-2022-41091coverage & exploitation statusNVD · CVE.org

Recent advisories for Microsoft Windows Mark

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.

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