ACTIVELY EXPLOITED

CVE-2023-36584: Microsoft Windows Mark of the Web (MOTW) Security Feature Bypass Vulnerability

Facts
VendorMicrosoft
ProductWindows
Actively exploitedYes
Added to CISA KEV16 Nov 2023
CISA federal deadline7 Dec 2023

Required action (CISA's text)

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Description (NVD)

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.

SOURCES

Other Microsoft flaws

Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.