CVE-2025-4134 – Avast Business Antivirus for Linux File Validation Bypass

The following table lists the changes that have been made to the
CVE-2025-4134 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    May. 28, 2025

    Action Type Old Value New Value
    Added Description Lack of file validation in do_update_vps in Avast Business Antivirus for Linux 4.5 on Linux allows local user to spoof or tamper with the update file via an unverified file write.
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
    Added CWE CWE-552
    Added Reference https://www.gendigital.com/us/en/contact-us/security-advisories/
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