Home/CVE/The Avast AV parsing engine allows virus-detection bypass via a crafted ZIP archive. This affects versions before 12 def
CVE

CVE-2020-9399

The Avast AV parsing engine allows virus-detection bypass via a crafted ZIP archive. This affects versions before 12 def

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.

MEDIUM · CVSS 5.5 EPSS 0.0012
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-436Interpretation Conflict
▤

Affected Products & Versions

3
avast antivirus for linux< 12.0
avast antivirus pro< 12.0
avast antivirus pro plus< 12.0
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD28 Feb 2020 · 02:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://blog.zoller.lu/p/tzo-23-2020-avast-generic-archive.htmlThird Party Advisory
https://seclists.org/fulldisclosure/2020/Feb/35Mailing ListThird Party Advisory
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