CVE-2025-45311

HIGH EPSS 24.0%
Published Nov 26, 20257mo ago · Modified Jun 17, 20262w ago
8.8 CVSS 3.1
High
Find Similar
Published Nov 26, 2025 7mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
8.8
Exploitability
2.8
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
24.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-266

References 4

  • openwall.com http://www.openwall.com/lists/oss-security/2025/12/03/2
  • gist.github.com https://gist.github.com/R-Security/1c707a08f9c7f9a91d9d84b5010aaed2
  • github.com https://github.com/fail2ban/fail2ban/issues/4110
  • packetstorm.news https://packetstorm.news/files/id/189989

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.