netVigilance Vulnerability intelligence since 2004
CVE-2022-44698 · netVigilance record NV22-0552

Microsoft Defender SmartScreen Security Feature Bypass

past due ransomware

What to do

Apply updates per vendor instructions.

CISA deadline 2023-01-03 · passed 3 years 8 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA

What happened

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.

Who is affected

Microsoft Defender. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.

Weakness class: CWE-755.

Timeline

  1. Added to CISA KEVExploitation in the wild confirmed by CISA
  2. CISA remediation deadlinepassed 3 years 8 months ago

Sources