CVE-2025-39664
Last modified
CVE-2025-39664 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Insufficient escaping in the report scheduler within Checkmk <2.4.0p13, <2.3.0p38, <2.2.0p46 and 2.1.0 (EOL) allows authenticated attackers to define the storage location of report file pairs beyond their intended root directory.. EPSS estimates a 0.63% chance of exploitation in the next 30 days.
Description
Insufficient escaping in the report scheduler within Checkmk <2.4.0p13, <2.3.0p38, <2.2.0p46 and 2.1.0 (EOL) allows authenticated attackers to define the storage location of report file pairs beyond their intended root directory.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Checkmk | Checkmk | >= 2.1.0, < 2.2.0 | — |
| Checkmk | Checkmk | 2.2.0 | P1 |
| Checkmk | Checkmk | 2.3.0 | — |
| Checkmk | Checkmk | 2.4.0 | — |
References
- https://checkmk.com/werk/17984Vendor Advisory
- https://github.com/sbaresearch/advisories/tree/public/2025/SBA-ADV-20250730-01_Checkmk_Path_TraversalExploit, Third Party Advisory
- http://seclists.org/fulldisclosure/2025/Oct/7Exploit, Mailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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