CVE-2025-39664

high-risk
Published 2025-10-09

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.

Do I need to act?

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0.08% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.5/10 Medium
NETWORK / LOW complexity

Affected Products (20)

Affected Vendors

Checkmk

References (3)

Vendor Advisory https://checkmk.com/werk/17984
Exploit https://github.com/sbaresearch/advisories/tree/public/2025/SBA-ADV-20250730-01_C...
Exploit http://seclists.org/fulldisclosure/2025/Oct/7
54
/ 100
high-risk
Severity 24/34 · High
Exploitability 0/34 · Minimal
Exposure 30/34 · Critical