{"id":"CVE-2024-49369","url":"https://www.cyber-defence.io/tools/cve/CVE-2024-49369","generatedAt":"2026-10-28T04:46:00.075Z","title":"The TLS certificate validation in all Icinga 2 versions starting from 2.4.0 was flawed, allowing an attacker to impersonate both trusted cluster nodes as well as any API users that use TLS client certificates for authentication (ApiUser objects with the…","description":"Icinga is a monitoring system which checks the availability of network resources, notifies users of outages, and generates performance data for reporting. The TLS certificate validation in all Icinga 2 versions starting from 2.4.0 was flawed, allowing an attacker to impersonate both trusted cluster nodes as well as any API users that use TLS client certificates for authentication (ApiUser objects with the client_cn attribute set). This vulnerability has been fixed in v2.14.3, v2.13.10, v2.12.11, and v2.11.12.","published":"2024-11-12T17:15:08.000Z","lastModified":"2026-06-17T07:59:47.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-295"],"affected":["icinga/icinga","debian/debian linux"],"epss":{"score":0.02915,"percentile":0.86935,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (2.92%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/Icinga/icinga2/commit/0419a2c36de408e9a703aec0962061ec9a285d3c","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/Icinga/icinga2/commit/2febc5e18ae0c93d989e64ebc2a9fd90e7205ad8","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/Icinga/icinga2/commit/3504fc7ed688c10d86988e2029a65efc311393fe","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/Icinga/icinga2/commit/869a7d6f0fe38c748e67bacc1fbdd42c933030f6","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/Icinga/icinga2/commit/8fed6608912c752b337d977f730547875a820831","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/Icinga/icinga2/security/advisories/GHSA-j7wq-r9mg-9wpv","tags":["Patch","Vendor Advisory"],"source":"security-advisories@github.com"},{"url":"https://icinga.com/blog/2024/11/12/critical-icinga-2-security-releases-2-14-3","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://lists.debian.org/debian-lts-announce/2024/11/msg00010.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2024-49369","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}