CVE-2025-4134

Lack of file validation in Avast Business Antivirus for Linux allows writing untrusted update files

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.

Remediation

Solution:

  • Fixed in V4.6 released 03/FEB/2025, ugrade to latest version.

Category

7.3
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.01%
Affected: Avast Avast Business Antivirus
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2025-4134?
CVE-2025-4134 has been scored as a high severity vulnerability.
How to fix CVE-2025-4134?
To fix CVE-2025-4134: Fixed in V4.6 released 03/FEB/2025, ugrade to latest version.
Is CVE-2025-4134 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-4134 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-4134?
CVE-2025-4134 affects Avast Avast Business Antivirus.
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