CVE-2024-6542

CVE-2024-6542 is a medium-severity vulnerability in Checkmk with a CVSS 3.x base score of 6.5. 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-140.

Key facts

• Severity: Medium (CVSS 3.x base score 6.5)
• EPSS exploit prediction: 0% (37th percentile)
• Actively exploited: Not listed in CISA KEV
• EU (EUVD) id: EUVD-2024-47616
• Weakness: CWE-140
• Affected product: Checkmk
• Published: 2024-07-22
• Last modified: 2026-06-17

Description

Improper neutralization of livestatus command delimiters in mknotifyd in Checkmk <= 2.0.0p39, < 2.1.0p47, < 2.2.0p32 and < 2.3.0p11 allows arbitrary livestatus command execution.

Frequently asked questions

What is CVE-2024-6542?

Improper neutralization of livestatus command delimiters in mknotifyd in Checkmk <= 2.0.0p39, < 2.1.0p47, < 2.2.0p32 and < 2.3.0p11 allows arbitrary livestatus command execution.

How severe is CVE-2024-6542?

CVE-2024-6542 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2024-6542 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-6542?

CVE-2024-6542 primarily affects Checkmk. In total, 157 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-6542?

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

Does CVE-2024-6542 have an EU (EUVD) identifier?

Yes. CVE-2024-6542 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-47616.

When was CVE-2024-6542 published?

CVE-2024-6542 was published on 2024-07-22 and last updated on 2026-06-17.

References

• https://checkmk.com/werk/17013

Affected products (157)

• cpe:2.3:a:checkmk:checkmk:2.0.0:-:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:b1:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:b2:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:b3:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:b4:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:b5:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:b6:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:b7:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:b8:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:i1:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p1:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p10:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p11:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p12:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p13:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p14:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p15:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p16:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p17:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p18:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p19:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p2:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p20:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p21:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p22:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p23:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p24:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p25:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p26:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p27:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p28:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p29:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p3:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p30:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p31:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p32:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p33:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p34:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p35:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p36:*:*:*:*:*:*

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