Missing brute-force protection for two factor authentication
Priority LOW 35CWE-307Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-307.
Summary
Improper restriction of excessive authentication attempts with two factor authentication methods in Checkmk 2.3 before 2.3.0p6 facilitates brute-forcing of second factor mechanisms.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00395 33rd percentileScored 2026-11-07
Fix Fixed Checkmk (Checkmk GmbH): 2.3.0p6
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
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 | 2.3.0 to before 2.3.0p6 | 2.3.0p6 | Patch available | CNA |
- Checkmk VendorCheckmk GmbH Affected 2.3.0 to before 2.3.0p6 Fixed in 2.3.0p6 Patch available CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:checkmk:checkmk:2.3.0:p1:*:*:*:*:*:* | 2.3.0 p1 | Vulnerable | Checkmk GmbH |
| cpe:2.3:a:checkmk:checkmk:2.3.0:p2:*:*:*:*:*:* | 2.3.0 p2 | Vulnerable | Checkmk GmbH |
| cpe:2.3:a:checkmk:checkmk:2.3.0:p3:*:*:*:*:*:* | 2.3.0 p3 | Vulnerable | Checkmk GmbH |
| cpe:2.3:a:checkmk:checkmk:2.3.0:p4:*:*:*:*:*:* | 2.3.0 p4 | Vulnerable | Checkmk GmbH |
| cpe:2.3:a:checkmk:checkmk:2.3.0:p5:*:*:*:*:*:* | 2.3.0 p5 | Vulnerable | Checkmk GmbH |
- cpe:2.3:a:checkmk:checkmk:2.3.0:p1:*:*:*:*:*:* Versions 2.3.0 p1 Vulnerable ·Checkmk GmbH
- cpe:2.3:a:checkmk:checkmk:2.3.0:p2:*:*:*:*:*:* Versions 2.3.0 p2 Vulnerable ·Checkmk GmbH
- cpe:2.3:a:checkmk:checkmk:2.3.0:p3:*:*:*:*:*:* Versions 2.3.0 p3 Vulnerable ·Checkmk GmbH
- cpe:2.3:a:checkmk:checkmk:2.3.0:p4:*:*:*:*:*:* Versions 2.3.0 p4 Vulnerable ·Checkmk GmbH
- cpe:2.3:a:checkmk:checkmk:2.3.0:p5:*:*:*:*:*:* Versions 2.3.0 p5 Vulnerable ·Checkmk GmbH
Remediation
- Fix · CNA Checkmk (Checkmk GmbH) Fixed in 2.3.0p6
Timeline
- 2026-10-02 Threatist record created from CVE-2024-28833
- 2026-10-03 Alias added: GHSA-59h5-f896-qx2f
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-2024-28833 · CVE Program
- CVE-2024-28833 · NVD
- FIRST EPSS
- GHSA-59h5-f896-qx2f · 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