Lack of TLS validation in plugin check-mk-api on Checkmk Exchange
Priority LOW 29CWE-295Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-295.
Summary
Improper Certificate Validation in Checkmk Exchange plugin check-mk-api allows attackers in MitM position to intercept traffic.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00109 1st percentileScored 2026-11-07
Fix Fixed check-mk-api: 6.1.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | check-mk-api | 2.2 to before 6.1.1 | 6.1.1 | Patch available | CNA |
- check-mk-api Vendor— Affected 2.2 to before 6.1.1 Fixed in 6.1.1 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:heinlein-support:check_mk_python_api:-:*:*:*:*:checkmk:*:* | not specified by NVD | Vulnerable | Heinlein-support |
- cpe:2.3:a:heinlein-support:check_mk_python_api:-:*:*:*:*:checkmk:*:* Versions not specified by NVD Vulnerable ·Heinlein-support
Remediation
- Fix · CNA check-mk-api Fixed in 6.1.1
Timeline
- 2026-10-02 Threatist record created from CVE-2025-58124
- 2026-10-03 Alias added: GHSA-mj3w-6w57-pmww
References
More Heinlein-support Check Mk Python Api vulnerabilities
- TI-2024-31474 Deserialization of untrusted data in check-mk-api CVSS 4.0HIGH 7.7
Sources
- CVE-2025-58124 · CVE Program
- CVE-2025-58124 · NVD
- FIRST EPSS
- GHSA-mj3w-6w57-pmww · GitHub Advisory Database · CC BY 4.0
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