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TI-2020-07517 Aliases CVE-2020-9399GHSA-w5vh-33ww-r5p2

The Avast AV parsing engine allows virus-detection bypass via a crafted ZIP archive.

Priority LOW 27CWE-436Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · High · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.01163 67th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:avast:antivirus_for_linux:*:*:*:*:*:*:*:*before 12.0VulnerableAvast
cpe:2.3:a:avast:antivirus_pro:*:*:*:*:*:*:*:*before 12.0VulnerableAvast
cpe:2.3:a:avast:antivirus_pro_plus:*:*:*:*:*:*:*:*before 12.0VulnerableAvast
  • cpe:2.3:a:avast:antivirus_for_linux:*:*:*:*:*:*:*:* Versions before 12.0 Vulnerable ·Avast
  • cpe:2.3:a:avast:antivirus_pro:*:*:*:*:*:*:*:* Versions before 12.0 Vulnerable ·Avast
  • cpe:2.3:a:avast:antivirus_pro_plus:*:*:*:*:*:*:*:* Versions before 12.0 Vulnerable ·Avast

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-9399
  2. 2026-10-03 Alias added: GHSA-w5vh-33ww-r5p2

References

Advisory 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences