CVE-2025-4134

HIGH

Avast Business Antivirus for Linux <4.5 - Info Disclosure

Title source: llm
STIX 2.1

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)

Scores

CVSS v3 7.3
EPSS 0.0006
EPSS Percentile 18.3%
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