Risk Letters

Exploited vulnerability

CVE-2023-24880

TLP:CLEAR

Microsoft Windows SmartScreen Security Feature Bypass Vulnerability

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.

Facts

  • Vendor: Microsoft
  • Product: Windows
  • CVSS: 4.4
  • EPSS (probability of exploitation within 30 days): 78 %
  • On CISA's Known Exploited Vulnerabilities list since: 14 March 2023
  • First known exploitation: 14 March 2023
  • Used in ransomware campaigns (per CISA): Yes
  • CISA's deadline for US federal agencies: 4 April 2023
  • Weakness: CWE-863
  • First seen by Risk Letters: 14 March 2023

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD