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High severity8.8NVD Advisory· Published Nov 26, 2025· Updated Apr 15, 2026

CVE-2025-45311

CVE-2025-45311

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.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

2
  • Fail2ban/Fail2banreferences2 versions
    (expand)+ 1 more
    • (no CPE)
    • (no CPE)range: =0.11.2

Patches

Vulnerability mechanics

References

4

News mentions

0

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