Microsoft Windows SmartScreen Security Feature Bypass Vulnerability (CVE-2023-24880)
Severity: medium · Patch status: patched · Since 2023-03-14 · CVE-2023-24880
Microsoft Windows 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. CISA added CVE-2023-24880 to its Known Exploited Vulnerabilities catalog on Mar 14, 2023, which means attackers are exploiting it in the wild. CISA reports known use in ransomware campaigns.
What to do
- Apply updates per vendor instructions.
- US federal agencies must remediate by Apr 4, 2023 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch
