Insufficient Escaping Vulnerability in Checkmk Reporting Tool
CVE-2025-39664

7.1HIGH

Key Information:

Vendor

Checkmk Gmbh

Status
Checkmk
Vendor
CVE Published:
9 October 2025

What is CVE-2025-39664?

The Checkmk reporting tool contains a vulnerability due to insufficient escaping in the report scheduler. This flaw allows authenticated attackers to manipulate the storage location of report file pairs, potentially leading them to store files outside the designated root directory, which can compromise data security and integrity.

Affected Version(s)

Checkmk 2.4.0 < 2.4.0p13

Checkmk 2.3.0 < 2.3.0p38

Checkmk 2.2.0 < 2.2.0p46

References

https://checkmk.com/werk/17984

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
None
Integrity:
Low
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Lisa Gnedt (SBA Research)
JSON
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CVE-2025-39664 : Insufficient Escaping Vulnerability in Checkmk Reporting Tool