Privilege escalation in N/a
CVE-2025-45311
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.
EPSS: 0.004 (28.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- N/a — versions n/a
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-45311?
- CVE-2025-45311 is a high-severity vulnerability in N/a, classified under Incorrect Privilege Assignment. CVSS score: 8.8/10. Published 2025-11-26.
- How severe is CVE-2025-45311?
- High severity. CVSS v3 base score is 8.8 out of 10.