How severe is CVE-2025-58124?

CVE-2025-58124 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-58124 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-58124?

CVE-2025-58124 affects Heinlein-support Check Mk Python Api. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-58124?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-58124 have an EU (EUVD) identifier?

Yes. CVE-2025-58124 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25967.

When was CVE-2025-58124 published?

CVE-2025-58124 was published on 2025-08-28 and last updated on 2026-06-17.

CVE-2025-58124

CVE-2025-58124 is a medium-severity vulnerability in Heinlein-support Check Mk Python Api with a CVSS 3.x base score of 4.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-295.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
CVSS v4: 6.9
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-25967
Weakness: CWE-295
Affected product: Heinlein-support Check Mk Python Api
Published: 2025-08-28
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2025-58124?: Improper Certificate Validation in Checkmk Exchange plugin check-mk-api allows attackers in MitM position to intercept traffic.
How severe is CVE-2025-58124?: CVE-2025-58124 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-58124 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-58124?: CVE-2025-58124 affects Heinlein-support Check Mk Python Api. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-58124?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-58124 have an EU (EUVD) identifier?: Yes. CVE-2025-58124 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25967.
When was CVE-2025-58124 published?: CVE-2025-58124 was published on 2025-08-28 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:heinlein-support:check_mk_python_api:-:*:*:*:*:checkmk:*:*

More vulnerabilities in Heinlein-support Check Mk Python Api

CVE-2024-47092 — Critical (CVSS 9.8): Insecure deserialization and improper certificate validation in Checkmk Exchange plugin check-mk-api prior to 5.8.1

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