VulnerabilityAnalyzed
CVE-2022-41091
Microsoft Windows Mark of the Web (MOTW) Security Feature Bypass Vulnerability
KEVMEDIUM 5.4EPSS 1.81%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 9 December 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
Windows Mark of the Web Security Feature Bypass Vulnerability
- CVSS 3.1
- 5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
- EPSS
- 1.81% probability · 77th percentile
- CISA KEV
- Listed 8 November 2022 · due 9 December 2022 · used in ransomware campaigns
- Weakness
- CWE-863
- Affected
- microsoft/windows 10 1507 · microsoft/windows 10 1607 · microsoft/windows 10 1809 · microsoft/windows 10 20h2 · microsoft/windows 10 21h1 · microsoft/windows 10 21h2 · microsoft/windows 10 22h2 · microsoft/windows 11 21h2 · microsoft/windows 11 22h2 · microsoft/windows server 2016 · microsoft/windows server 2019 · microsoft/windows server 2022
- Source
- secure@microsoft.com
CISA notes
Apply updates per vendor instructions. https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-41091; https://nvd.nist.gov/vuln/detail/CVE-2022-41091
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-41091Patch, Vendor Advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-41091Patch, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-41091US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.