CVE-2024-6542Network attack vector

Unauthenticated Livestatus command execution via unescaped delimiters

Published Jul 22, 2024 · Updated Aug 1, 2024

Livestatus injection in affected Checkmk releases allows remote attackers to execute arbitrary Livestatus commands through mknotifyd. mknotifyd passed malicious notification data to Livestatus without escaping command delimiters, allowing embedded delimiters to create additional commands. The network path requires no authentication or user interaction; reported consequences are limited to integrity and availability, with no confidentiality loss.

CVSS severity6.5
Medium
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Livestatus injection in affected Checkmk releases allows remote attackers to execute arbitrary Livestatus commands through mknotifyd. mknotifyd passed malicious notification data to Livestatus without escaping command delimiters, allowing embedded delimiters to create additional commands. The network path requires no authentication or user interaction; reported consequences are limited to integrity and availability, with no confidentiality loss.

The record

CVE
CVE-2024-6542
Published
Jul 22, 2024
Updated
Aug 1, 2024
Vendor
Checkmk GmbH
Product
Checkmk
Classifications
CWE-140, CAPEC-15, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 22, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.0.0 <=2.0.0p39
  2. Affected versionversion=2.1.0 <2.1.0p47
  3. Affected versionversion=2.2.0 <2.2.0p32
  4. Affected versionversion=2.3.0 <2.3.0p11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Checkmk GmbH · Checkmkversion=2.0.0 <=2.0.0p39; version=2.1.0 <2.1.0p47; version=2.2.0 <2.2.0p32; version=2.3.0 <2.3.0p11

Published CVSS scores

6.5Checkmk GmbHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-140Improper Neutralization of Delimiters
CAPEC-15Command Delimiters
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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