CVE-2025-4134

HIGH

Avast Business Antivirus for Linux <4.5 - Info Disclosure

Title source: llm

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.

References (1)

Core 1

Core References

Various Sources

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

Scores

CVSS v3 7.3

EPSS 0.0017

EPSS Percentile 6.9%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-552

Status published

Products (1)

Avast/Avast Business Antivirus 4.5.1

Published May 28, 2025

Tracked Since Feb 18, 2026