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CVE-2026-118965VulnerabilityPublished

Checkmk: Mehrere Schwachstellen ermöglichen Codeausführung

Affects Bundesamt für Sicherheit in der Informationstechnik CheckmkSource GCVE Database

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Authoritative record:CVE-2026-118965· Critical 9.4

Not known to be exploited · CVSS 9.4 Critical : upgrade to 2.5.0p19 or 2.4.0p40 as a priority.

Data as of 12 Nov 2026, 12:06 UTC

CVSS 4.0 base score
9.4Critical
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (Checkmk)CVSS 4.09.4
Patch
Available – fixed in 2.5.0p19, 2.4.0p40
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 12 Nov 2026.

What to do

Upgrade Bundesamt für Sicherheit in der Informationstechnik Checkmk to 2.5.0p19 or 2.4.0p40.

Affected software

ProductAffectedFixed in
Checkmk GmbHCheckmkAffected
  • >=2.5.0 <2.5.0p19
  • >=2.4.0 <2.4.0p40
  • =2.3.0
Fixed in
  • 2.5.0p19
  • 2.4.0p40

AI-suggested

Upgrade Checkmk to version 3.0.0b1 or later to remediate these vulnerabilities. No additional mitigation steps are indicated by the vendor.

Description

Multiple vulnerabilities in Checkmk, an IT monitoring software, allow for code execution. These issues affect versions prior to 3.0.0b1 and the 3.0.0b1 version itself. A fix is available starting with version 3.0.0b1.

References

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