VulnerabilityDeferred

CVE-2025-4134

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.

HIGH 7.3EPSS 0.21%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 3.1: 7.3 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
EPSS: 0.21% probability · 11th percentile
CISA KEV: Not listed
Weakness: CWE-552
Source: security@nortonlifelock.com

References

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

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.