{"id":"CVE-2025-65000","aliases":["EUVD-2025-204293","GHSA-5393-2v6g-pgwc","UBUNTU-CVE-2025-65000"],"status":"published","title":"Exposure of SSH Private Keys in Remote Alert Handlers (Linux) Rule","description":"SSH private keys of the \"Remote alert handlers (Linux)\" rule were exposed in the rule page's HTML source in Checkmk \u003c= 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.","severity":{"version":"4.0","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","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00216,"percentile":0.12202,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-212"],"published":"2025-12-18T14:04:12Z","modified":"2026-10-28T02:30:28Z","affected":[{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"check-mk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.6p5-1","1.2.6p12-1","1.2.6p12-1ubuntu0.16.04.1","1.2.6p12-1ubuntu0.16.04.1+esm1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"check-mk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.8p16-1ubuntu0.1","1.2.8p16-1ubuntu0.2"]}],"products":[{"vendor":"checkmk","product":"checkmk"},{"vendor":"checkmk gmbh","product":"checkmk"}],"references":[{"url":"https://checkmk.com/werk/19030","tags":["Vendor Advisory","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-65000","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-5393-2v6g-pgwc"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/65xxx/CVE-2025-65000.json","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-65000","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-65000","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2025-65000","title":"Exposure of SSH Private Keys in Remote Alert Handlers (Linux) Rule","description":"SSH private keys of the \"Remote alert handlers (Linux)\" rule were exposed in the rule page's HTML source in Checkmk \u003c= 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.","status":"published","published":"2025-12-18T14:04:12.809Z","modified":"2025-12-18T15:28:51.856Z","cvss":[{"version":"4.0","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","level":"low","assessor":"cna"}],"cwes":["CWE-212"],"updated_at":"2026-11-02T14:32:26.64278Z"}],"euvd":[{"id":"EUVD-2025-204293","description":"SSH private keys of the \"Remote alert handlers (Linux)\" rule were exposed in the rule page's HTML source in Checkmk \u003c= 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.","status":"published","published":"2025-12-18T14:04:12Z","modified":"2025-12-18T15:28:51Z","cvss":[{"version":"4.0","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","level":"low"}],"updated_at":"2026-11-02T19:49:03.071772Z"}],"ghsa":[{"id":"GHSA-5393-2v6g-pgwc","title":"SSH private keys of the \"Remote alert handlers (Linux)\" rule were exposed in the rule page's HTML...","description":"SSH private keys of the \"Remote alert handlers (Linux)\" rule were exposed in the rule page's HTML source in Checkmk \u003c= 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.","status":"published","published":"2025-12-18T15:30:43Z","modified":"2025-12-23T18:30:25Z","cvss":[{"version":"4.0","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/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","level":"low"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-212"],"updated_at":"2026-11-02T15:05:19.885762Z"}],"nvd":[{"id":"CVE-2025-65000","description":"SSH private keys of the \"Remote alert handlers (Linux)\" rule were exposed in the rule page's HTML source in Checkmk \u003c= 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.","status":"published","published":"2025-12-18T14:15:59.947Z","modified":"2026-10-13T11:10:00.203Z","cvss":[{"version":"4.0","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/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","level":"low","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-212"],"updated_at":"2026-11-02T14:11:52.309391Z"}],"osv":[{"id":"CVE-2025-65000","title":"Exposure of SSH Private Keys in Remote Alert Handlers (Linux) Rule","description":"SSH private keys of the \"Remote alert handlers (Linux)\" rule were exposed in the rule page's HTML source in Checkmk \u003c= 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.","status":"published","published":"2025-12-18T14:04:12.809Z","modified":"2026-10-28T02:30:28.338498605Z","cvss":[{"version":"4.0","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","level":"low"}],"cwes":["CWE-212"],"updated_at":"2026-11-02T15:44:51.851511Z"},{"id":"UBUNTU-CVE-2025-65000","description":"SSH private keys of the \"Remote alert handlers (Linux)\" rule were exposed in the rule page's HTML source in Checkmk \u003c= 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.","status":"published","published":"2025-12-18T14:15:00Z","modified":"2025-12-29T05:56:29.027429Z","cvss":[{"version":"4.0","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","level":"low"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T16:55:52.345622Z"}]}}