Microsoft Windows Mark of the Web (MOTW) Security Feature Bypass Vulnerability

Critical Threat Advisory: This vulnerability is documented in active Ransomware campaigns. Immediate remediation required.

Technical Severity

CVSS v3.1 Metrics

MEDIUM

5.4 / 10

Minimal Risk Critical

Vector Specification

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L/E:U/RL:O/RC:C

Exploitation Likelihood

EPSS Prediction

5.49 %

Predictive Probability

Percentile Rank

90.0 th

Documented as more likely to be exploited than 90.0% of known CVEs.

Detection Date

Nov 08, 2022

Remediation Due

Dec 09, 2022

CISA Catalog Active

Threat Analysis

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.

Remediation Directive

Apply updates per vendor instructions.

Asset Context

Vendor Identity

Microsoft

Affected Product

Windows

Ransomware Status

Campaign Use Known

Weakness Classification

CWE-863

External Intelligence

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-41091

NVD

National Vulnerability Database

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