Local File Verification Flaw in Avast Business Antivirus for Linux
CVE-2025-4134

7.3HIGH

Key Information:

Vendor

Avast

Status
Avast Business Antivirus
Vendor
CVE Published:
28 May 2025

What is CVE-2025-4134?

A vulnerability exists in Avast Business Antivirus for Linux wherein the software fails to adequately verify the authenticity of update files, specifically during the do_update_vps process. This oversight allows local users to potentially spoof or modify update files without detection, posing a security threat to the integrity of the antivirus software. Proper file validation is crucial in preventing unauthorized changes that could lead to system compromise.

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Affected Version(s)

Avast Business Antivirus Linux 4.5.1

References

https://www.gendigital.com/us/en/contact-us/security-advi...

CVSS V3.1

Score:
7.3
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

FIS Securtiy
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