CVE-2025-4134
High
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.
SeverityHigh
CVSS7.3
Exploit probability—
ProductAvast Business Antivirus
PublishedMay 28, 2025
First seenMay 28, 2025
Weakness typeCWE-552CWE-552
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Avast Avast Business Antivirus | 4.5.1 | — |
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