VULNERABILITY INTELLIGENCE

CVE-2021-45337

CVSS score8.8 HIGH
EPSS probability0.45%
CISA KEVNot currently listed
Published2021-12-27
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Description

Privilege escalation vulnerability in the Self-Defense driver of Avast Antivirus prior to 20.8 allows a local user with SYSTEM privileges to gain elevated privileges by "hollowing" process wsc_proxy.exe which could lead to acquire antimalware (AM-PPL) protection.

Weakness classification

  • nvd@nist.gov: NVD-CWE-noinfo

Primary references