What’s Vulnerable › Vulnerabilities
CVE-2021-40904
- Severity: high (CVSS 8.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 3.7% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2022-03-25 · updated 2026-07-09
- Weakness: CWE-276
Description
The web management console of CheckMK Raw Edition (versions 1.5.0 to 1.6.0) allows a misconfiguration of the web-app Dokuwiki (installed by default), which allows embedded php code. As a result, remote code execution is achieved. Successful exploitation requires access to the web management interface, either with valid credentials or with a hijacked session by a user with the role of administrator.
Affected products
- Checkmk GmbH Checkmk: from 1.5.0 before 1.6.0 — fixed in 1.6.0
How to fix
Upgrade to a fixed version: Checkmk GmbH Checkmk 1.6.0. Check the vendor advisory for mitigations.
References
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