[ CVE-2022-44698 · Published 13 Dec 2022 ]

Microsoft Defender SmartScreen Security Feature Bypass Vulnerability

Exploited · CISA KEV CVSS 5.4 EPSS 76%Fix available

[ Why it matters ]Priority signals

  • Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2022-12-13
  • Known to be used in ransomware campaigns
  • EPSS: 76% chance of exploitation in the next 30 days (higher than 100% of CVEs)

[ Description ]Official description

Windows SmartScreen Security Feature Bypass Vulnerability

CISA: Microsoft Defender SmartScreen contains a security feature bypass vulnerability that could allow an attacker to evade Mark of the Web (MOTW) defenses via a specially crafted malicious file.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 3 Jan 2023): Apply updates per vendor instructions.