BaseFortify

Publication date: 2025-11-26

Last updated on: 2025-12-03

Assigner: MITRE

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 Scores

EPSS Scores

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Meta Information

Published

2025-11-26

Last Modified

2025-12-03

Generated

2026-07-06

AI Q&A

2025-11-26

EPSS Evaluated

2026-07-05

NVD

CVE-2025-45311

Affected Vendors & Products

Vendor	Product	Version / Range
fail2ban	fail2ban	0.11.2

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-266	A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.

Attack-Flow Graph

Executive Summary

This vulnerability involves insecure permissions in fail2ban-client version 0.11.2, which allows attackers who have limited sudo privileges to execute arbitrary operations with root-level access.

Impact Analysis

An attacker exploiting this vulnerability could escalate their privileges from limited sudo access to full root access, potentially compromising the entire system and performing unauthorized actions.

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