What’s Vulnerable › Vulnerabilities

CVE-2025-39664: Path-Traversal in report scheduler

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-10-09 · updated 2026-10-23
• Weakness: CWE-22

Description

Insufficient escaping in the report scheduler within Checkmk <2.4.0p13, <2.3.0p38, <2.2.0p46 and 2.1.0 (EOL) allows authenticated attackers to define the storage location of report file pairs beyond their intended root directory.

Affected products

• Checkmk GmbH Checkmk: from 2.1.0 before 2.2.0; 2.2.0-p1, 2.2.0-p10, 2.2.0-p11, 2.2.0-p12, 2.2.0-p13, 2.2.0-p14 (+87) — fixed in 2.2.0

How to fix

Upgrade to a fixed version: Checkmk GmbH Checkmk 2.2.0. Check the vendor advisory for mitigations.

References

• https://checkmk.com/werk/17984
• https://github.com/sbaresearch/advisories/tree/public/2025/SBA-ADV-20250730-01_Checkmk_Path_Traversal
• http://seclists.org/fulldisclosure/2025/Oct/7

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