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CVE-2021-45338

HIGH CVSS: 7.8 Published: 2021-12-27 Modified: 2026-06-17

Description

Multiple privilege escalation vulnerabilities in Avast Antivirus prior to 20.4 allow a local user to gain elevated privileges by calling unnecessarily powerful internal methods of the main antivirus service which could lead to the (1) arbitrary file delete, (2) write and (3) reset security.

Affected Platforms

Avast Antivirus

Weakness Type

NVD-CWE-Other

References