Exposure of SSH Private Keys in Remote Alert Handlers (Linux) Rule
Summary
| CVE | CVE-2025-65000 |
|---|---|
| State | PUBLISHED |
| Assigner | Checkmk |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2025-12-18 14:15:59 UTC |
| Updated | 2026-10-13 11:10:00 UTC |
| Description | SSH private keys of the "Remote alert handlers (Linux)" rule were exposed in the rule page's HTML source in Checkmk <= 2.4.0p18 and all versions of Checkmk 2.3.0. This potentially allowed unauthorized triggering of predefined alert handlers on hosts where the handler was deployed. |
Risk And Classification
Primary CVSS: v4.0 2.3 LOW from [email protected]
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:L/SA:L/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
Problem Types: CWE-212 | CWE-212 CWE-212: Improper Removal of Sensitive Information Before Storage or Transfer
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | [email protected] | Secondary | 2.3 | LOW | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:L/SA:L/E:X/C... |
| 4.0 | CNA | DECLARED | 2.3 | LOW | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:L/SA:L |
| 3.1 | [email protected] | Primary | 5.3 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
CVSS v4.0 Breakdown
Attack Vector
NetworkAttack Complexity
LowAttack Requirements
PresentPrivileges Required
LowUser Interaction
NoneConfidentiality
LowIntegrity
NoneAvailability
NoneSub Conf.
NoneSub Integrity
LowSub Availability
LowCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:L/SA:L/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
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
LowIntegrity
NoneAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Checkmk | Checkmk | 2.2.0 | All | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | - | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | b1 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | b2 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | b3 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | b4 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | b5 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | b6 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p1 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p10 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p11 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p12 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p13 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p14 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p15 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p16 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p17 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p18 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p19 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p2 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p20 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p21 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p22 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p23 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p24 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p25 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p26 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p27 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p28 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p29 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p3 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p30 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p31 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p32 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p33 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p34 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p35 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p36 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p37 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p38 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p39 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p4 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p40 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p41 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p5 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p6 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p7 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p8 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p9 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | - | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | b1 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | b2 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | b3 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | b4 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | b5 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | b6 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p1 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p10 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p11 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p12 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p13 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p14 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p15 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p16 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p17 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p18 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p2 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p3 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p4 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p5 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p6 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p7 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p8 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p9 | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Checkmk GmbH | Checkmk | affected 2.4.0 2.4.0p18 semver | Not specified |
| CNA | Checkmk GmbH | Checkmk | affected 2.3.0 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| checkmk.com/werk/19030 | [email protected] | checkmk.com | Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.