CVE-2026-2859
MEDIUM EPSS 8.9%
Published Mar 13, 20263mo ago · Modified Jun 17, 20261w ago
6.3 CVSS 4.0
Published Mar 13, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago
Description
Improper permission enforcement in Checkmk versions 2.4.0 before 2.4.0p23, 2.3.0 before 2.3.0p43, and 2.2.0 (EOL) allows unauthenticated users to enumerate existing hosts by observing different HTTP response codes in deploy_agent endpoint, which could lead to information disclosure.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/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 Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
8.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-204
Affected Products 135
| Vendor | Product | Version | Range |
|---|---|---|---|
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.2.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.3.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
| checkmk | checkmk | 2.4.0 | any |
References 1
- checkmk.com https://checkmk.com/werk/18994
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.