CVE-2020-9399

Published: Feb 28, 2020Modified: Jun 17, 2026

5.5

Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Exploitability: 1.8 / Impact: 3.6

Source: NVD

Description

The Avast AV parsing engine allows virus-detection bypass via a crafted ZIP archive. This affects versions before 12 definitions 200114-0 of Antivirus Pro, Antivirus Pro Plus, and Antivirus for Linux.

Affected (3)

Products: Avast: Antivirus For Linux, Antivirus Pro, Antivirus Pro Plus

3 products

Configuration A

3 vulnerable

Vulnerable Software	Affected Versions
Avast Antivirus For Linux	Before 12.0
Avast Antivirus Pro	Before 12.0
Avast Antivirus Pro Plus	Before 12.0

Related CWEs

CWE-436

Interpretation Conflict

Product A handles inputs or steps differently than Product B, which causes A to perform incorrect actions based on its perception of B's state.

References (4)

https://blog.zoller.lu/p/tzo-23-2020-avast-generic-archive.html

Source: cve@mitre.org

Third Party Advisory

https://seclists.org/fulldisclosure/2020/Feb/35

Source: cve@mitre.org

Mailing ListThird Party Advisory

https://blog.zoller.lu/p/tzo-23-2020-avast-generic-archive.html

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://seclists.org/fulldisclosure/2020/Feb/35

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListThird Party Advisory

Timeline

No history available yet.