CVE-2025-39666 (GCVE-0-2025-39666)

Vulnerability from cvelistv5 – Published: 2026-04-07 12:09 – Updated: 2026-04-07 13:18
VLAI
Title
omd: Local privilege escalation when executing omd commands as root
Summary
Local privilege escalation in Checkmk 2.2.0 (EOL), Checkmk 2.3.0 before 2.3.0p46, Checkmk 2.4.0 before 2.4.0p25, and Checkmk 2.5.0 (beta) before 2.5.0b3 allows a site user to escalate their privileges to root, by manipulating files in the site context that are processed when the `omd` administrative command is run by root.
Severity
9.3 (Critical)
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-07 13:18 UTC
CWE
  • CWE-426 - Untrusted Search Path
  • CWE-829 - Inclusion of Functionality from Untrusted Control Sphere
Assigner
References
URL Tags
https://checkmk.com/werk/18891 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.2.0 (semver)
Affected: 2.3.0 , < 2.3.0p46 (semver)
Affected: 2.4.0 , < 2.4.0p25 (semver)
Affected: 2.5.0b1 , < 2.5.0b3 (semver)
    cpe:2.3:a:checkmk:checkmk:2.2.0:*:*:*:*:*:*:*
    cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*
    cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*
    cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.