CVE-2025-58124: Improper Certificate Validation in Checkmk Exchange plugin check-mk-api allows attackers in MitM position to i

Routine

MEDIUM 4.8REMOTEMITIGATE

CVE-2025-58124 is a medium-severity flaw (CVSS 4.8) affecting check mk python api. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.1% (top 99%)
CISA exploited list	No
Weakness	CWE-295
Published	2025-08-28
Last modified	2026-09-26

Publisher (CNA): Checkmk GmbH · Vendor: heinlein-support

Last updated 2026-09-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-08-28 13:16 UTCPublished CVE record published
2026-09-26 00:10 UTCUpdated Record last modified

heinlein-support check mk python api MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy check-mk-python-api || rpm -q check-mk-python-api || check-mk-python-api --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-58124?

check mk python api: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-58124 being exploited?

CVE-2025-58124 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-58124 affect?

CVE-2025-58124 affects check mk python api. Severity is medium (CVSS 4.8). Improper Certificate Validation in Checkmk Exchange plugin check-mk-api allows attackers in MitM position to intercept traffic.

How urgent is CVE-2025-58124?

Priority 22/100. Remotely exploitable, no login, no user action

Software pages

Python vulnerabilities

Related CVEs

CVE-2024-47092 CRITICAL 9.8 UPGRADE Insecure deserialization and improper certificate validation in Checkmk Exchange plugin check-mk-api prior to

References

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