Microsoft Windows Mark of the Web (MOTW) Security Feature Bypass Vulnerability
Windows Mark of the Web Security Feature Bypass Vulnerability
What happened
Windows Mark of the Web Security Feature Bypass Vulnerability
CISA lists it as exploited, added 16 Nov 2023.
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
- Apply the vendor patch named in this advisory.
msrc.microsoft.com - Apply mitigations per vendor instructions 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 10.0.14393.6351
The record
- NVD status
- Analyzed
- Published
- 10 Oct 2023, last modified 17 Jun 2026 (NVD)
- Severity
- CVSS 3.1 base score 5.4, Medium — computed here from the vector; NVD states 5.4.
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
- Exploitation
- Listed in CISA’s Known Exploited Vulnerabilities catalogue since 16 Nov 2023; federal remediation due 07 Dec 2023. CISA entry
- Exploit probability
- EPSS 3.3%, 88th percentile — FIRST, scored 23 Oct 2026. FIRST EPSS
- Vendor
- Microsoft · Windows (CISA)
References on the NVD record
- msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36584PatchVendor Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-36584US 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.