CVE-2023-36584
Microsoft Windows Mark of the Web (MOTW) Security Feature Bypass Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 7 December 2023). 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
- 3.25% probability · 88th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 16 November 2023 · due 7 December 2023
- Affected
- microsoft/windows 10 1507 · microsoft/windows 10 1809 · microsoft/windows 10 21h1 · microsoft/windows 10 22h2 · microsoft/windows 11 21h2 · microsoft/windows 11 22h2 · microsoft/windows server 2008 · microsoft/windows server 2012 · microsoft/windows server 2016 · microsoft/windows server 2019 · microsoft/windows server 2022
- Source
- secure@microsoft.com
EPSS 3.3% since 30 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36584 ; https://nvd.nist.gov/vuln/detail/CVE-2023-36584
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36584Patch, Vendor Advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36584Patch, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-36584US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.