Potentially senitive path exposed via unauthenticated http route
Priority LOW 34CWE-497Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- None · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-497.
Summary
Files to be deployed with agents are accessible without authentication in Checkmk 2.1.0, Checkmk 2.2.0, Checkmk 2.3.0 and <Checkmk 2.4.0b6 allows attacker to access files that could contain secrets.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00324 25th percentileScored 2026-11-07
Fix Fixed Checkmk (Checkmk GmbH): 2.4.0b6
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Checkmk GmbH | Checkmk | 2.4.0 to before 2.4.0b6; 2.3.0; 2.2.0; 2.1.0 – 2.1.0p50 | 2.4.0b6 | Patch available | CNA |
- Checkmk VendorCheckmk GmbH Affected 2.4.0 to before 2.4.0b6; 2.3.0; 2.2.0; 2.1.0 – 2.1.0p50 Fixed in 2.4.0b6 Patch available CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:* | 2.1.0 – 2.3.0 | Vulnerable | Checkmk GmbH |
| cpe:2.3:a:checkmk:checkmk:2.4.0:-:*:*:*:*:*:* | 2.4.0 | Vulnerable | Checkmk GmbH |
| cpe:2.3:a:checkmk:checkmk:2.4.0:b1:*:*:*:*:*:* | 2.4.0 b1 | Vulnerable | Checkmk GmbH |
| cpe:2.3:a:checkmk:checkmk:2.4.0:b2:*:*:*:*:*:* | 2.4.0 b2 | Vulnerable | Checkmk GmbH |
| cpe:2.3:a:checkmk:checkmk:2.4.0:b3:*:*:*:*:*:* | 2.4.0 b3 | Vulnerable | Checkmk GmbH |
| cpe:2.3:a:checkmk:checkmk:2.4.0:b4:*:*:*:*:*:* | 2.4.0 b4 | Vulnerable | Checkmk GmbH |
| cpe:2.3:a:checkmk:checkmk:2.4.0:b5:*:*:*:*:*:* | 2.4.0 b5 | Vulnerable | Checkmk GmbH |
- cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:* Versions 2.1.0 – 2.3.0 Vulnerable ·Checkmk GmbH
- cpe:2.3:a:checkmk:checkmk:2.4.0:-:*:*:*:*:*:* Versions 2.4.0 Vulnerable ·Checkmk GmbH
- cpe:2.3:a:checkmk:checkmk:2.4.0:b1:*:*:*:*:*:* Versions 2.4.0 b1 Vulnerable ·Checkmk GmbH
- cpe:2.3:a:checkmk:checkmk:2.4.0:b2:*:*:*:*:*:* Versions 2.4.0 b2 Vulnerable ·Checkmk GmbH
- cpe:2.3:a:checkmk:checkmk:2.4.0:b3:*:*:*:*:*:* Versions 2.4.0 b3 Vulnerable ·Checkmk GmbH
- cpe:2.3:a:checkmk:checkmk:2.4.0:b4:*:*:*:*:*:* Versions 2.4.0 b4 Vulnerable ·Checkmk GmbH
- cpe:2.3:a:checkmk:checkmk:2.4.0:b5:*:*:*:*:*:* Versions 2.4.0 b5 Vulnerable ·Checkmk GmbH
Remediation
- Fix · CNA Checkmk (Checkmk GmbH) Fixed in 2.4.0b6
Timeline
- 2026-10-02 Threatist record created from CVE-2025-3506
- 2026-10-03 Alias added: GHSA-6ghc-9qc9-qfm5
References
Advisory 1
More Checkmk GmbH Checkmk vulnerabilities
- TI-2025-26345 Cross Site Scripting through compromised remote site CVSS 4.0HIGH 8.5
- TI-2025-40190 Cross-site scripting in HTML logs of Synthetic Monitoring test services CVSS 4.0HIGH 7.3
- TI-2024-19037 Brute-force protection ineffective for some login methods CVSS 3.1CRITICAL 9.8
- TI-2024-05712 local IP restriction of internal HTTP endpoints CVSS 3.1CRITICAL 9.8
- TI-2021-17818 The web management console of CheckMK Enterprise Edition (versions 1.5.0 to 2.0.0p9) does… CVSS 3.1HIGH 8.8
- TI-2021-17817 The web management console of CheckMK Raw Edition (versions 1.5.0 to 1.6.0) allows a… CVSS 3.1HIGH 8.8
Sources
- CVE-2025-3506 · CVE Program
- CVE-2025-3506 · NVD
- FIRST EPSS
- GHSA-6ghc-9qc9-qfm5 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences