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TI-2006-01309 Aliases CVE-2006-1355GHSA-xqq5-jv4j-qg87

avast! Antivirus 4.6.763 and earlier sets "BUILTIN\Everyone" permissions to critical…

Priority LOW 32Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Complete · Complete · Complete
Fix status
No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA.

Summary

avast! Antivirus 4.6.763 and earlier sets "BUILTIN\Everyone" permissions to critical system files in the installation folder, which allows local users to gain privileges or disable protection by modifying those files.

Why it matters now

EPSS 0.00387 33rd 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 · 1

CPEVersionsRoleVendor
cpe:2.3:a:alwil:avast_antivirus:*:*:*:*:*:*:*:*up to 4.6.763VulnerableAlwil
  • cpe:2.3:a:alwil:avast_antivirus:*:*:*:*:*:*:*:* Versions up to 4.6.763 Vulnerable ·Alwil

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2006-1355
  2. 2026-10-03 Alias added: GHSA-xqq5-jv4j-qg87

References

Other 3

  • TI-2012-01281 The TAR file parser in AhnLab V3 Internet Security 2011.01.18.00, Avira AntiVir… CVSS 2.0MEDIUM 4.3
  • TI-2012-01279 The TAR file parser in Avira AntiVir 7.11.1.163, Antiy Labs AVL SDK 2.0.3.7, avast!… CVSS 2.0MEDIUM 4.3
  • TI-2012-01265 The RAR file parser in ClamAV 0.96.4, Rising Antivirus 22.83.00.03, Quick Heal (aka Cat… CVSS 2.0MEDIUM 4.3
  • TI-2006-02777 Unspecified vulnerability in the CHM unpacker in avast! before 4.7.844 has unknown impact and remote attack vectors. CVSS 2.0HIGH 10.0
  • TI-2006-04472 Heap-based buffer overflow in alwil avast! Anti-virus Engine before 4.7.869 allows remote… CVSS 2.0HIGH 7.5
  • TI-2005-02257 Buffer overflow in a third-party compression library (UNACEV2.DLL), as used in avast!… CVSS 2.0HIGH 7.5
See all 12 →

Sources

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