CVE-2025-65000

Exposure of SSH Private Keys in Remote Alert Handlers (Linux) Rule

Published Dec 18, 2025 CVSS 4.0 · 2.3 Low EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
References
History
Type Values Removed Values Added
CPEs cpe:2.3:a:checkmk:checkmk:2.2.0:*:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:-:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:b1:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:b2:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:b3:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:b4:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:b5:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:b6:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p10:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p11:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p12:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p13:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p14:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p15:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p16:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p17:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p18:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p19:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p1:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p20:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p21:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p22:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p23:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p24:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p25:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p26:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p27:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p28:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p29:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p2:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p30:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p31:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p32:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p33:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p34:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p35:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p36:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p37:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p38:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p39:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p3:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p40:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p41:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p4:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p5:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p6:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p7:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p8:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p9:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:-:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:b1:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:b2:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:b3:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:b4:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:b5:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:b6:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p10:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p11:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p12:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p13:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p14:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p15:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p16:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p17:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p18:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p1:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p2:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p3:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p4:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p5:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p6:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p7:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p8:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p9:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Exposure of SSH Private Keys in Remote Alert Handlers (Linux) Rule
First Time appeared Checkmk
Checkmk checkmk
Weaknesses CWE-212
CPEs cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:*:*:*:*:*:*:*
Vendors & Products Checkmk
Checkmk checkmk
References
Metrics cvssV4_0

{'score': 2.3, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Checkmk
Published
Updated
Dec 18, 2025, 3:28 PM
Reserved
Nov 12, 2025, 9:16 AM
Status
Analyzed
Published
Dec 18, 2025, 2:15 PM
Modified
Oct 13, 2026, 11:10 AM