CVE-2025-45311
High
Description
Insecure permissions in fail2ban-client v0.11.2 allows attackers with limited sudo privileges to perform arbitrary operations as root. NOTE: this is disputed by multiple parties because the action for a triggered rule can legitimately be an arbitrary operation as root. Thus, the software is behaving in accordance with its intended privilege model.
SeverityHigh
CVSS8.8
Exploit probability—
ProductFail2ban-client
PublishedNov 26, 2025
First seenNov 26, 2025
Weakness typeCWE-266CWE-266
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| fail2ban-client | 0.11.2 | — |
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