CVE-2026-61550

{"id": "CVE-2026-61550", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-61550", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-09-21T15:29:22.834072Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "Icinga", "product": "icinga2", "versions": [{"status": "affected", "version": ">= 2.8, < 2.14.9"}, {"status": "affected", "version": ">= 2.15.0, < 2.15.4"}, {"status": "affected", "version": ">= 2.16.0, < 2.16.2"}]}]}], "published": "2026-09-18T18:17:08.217", "references": [{"url": "https://github.com/Icinga/icinga2/commit/4b7fb3405f4616a24b2b55e20f603a56b7dd6ad0", "source": "security-advisories@github.com"}, {"url": "https://github.com/Icinga/icinga2/commit/6c2e0db3819f859910a4ae265461cb51b1d2039c", "source": "security-advisories@github.com"}, {"url": "https://github.com/Icinga/icinga2/commit/a6f7cc7a4ef8beed023b24416106822d6940c4c0", "source": "security-advisories@github.com"}, {"url": "https://github.com/Icinga/icinga2/commit/d37b0cfd7d9595ae2f02fadb3d724c98d8620f81", "source": "security-advisories@github.com"}, {"url": "https://github.com/Icinga/icinga2/pull/10907", "source": "security-advisories@github.com"}, {"url": "https://github.com/Icinga/icinga2/releases/tag/v2.14.9", "source": "security-advisories@github.com"}, {"url": "https://github.com/Icinga/icinga2/releases/tag/v2.15.4", "source": "security-advisories@github.com"}, {"url": "https://github.com/Icinga/icinga2/releases/tag/v2.16.2", "source": "security-advisories@github.com"}, {"url": "https://github.com/Icinga/icinga2/security/advisories/GHSA-vj39-ww8j-vvx5", "source": "security-advisories@github.com"}, {"url": "https://icinga.com/blog/icinga2-security-release-v2-16-2", "source": "security-advisories@github.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-862"}]}], "descriptions": [{"lang": "en", "value": "Icinga 2 is an open source monitoring system. From 2.8 until 2.14.9, 2.15.4, and 2.16.2, certificate update JSON-RPC message handling does not validate that the sender is a trusted endpoint. An unauthenticated network attacker able to connect to TCP port 5665 can replace the node certificate and trusted CA certificate, impersonate a trusted node, and take control of the node. This issue is fixed in versions 2.14.9, 2.15.4, and 2.16.2."}], "lastModified": "2026-09-24T21:17:43.237", "sourceIdentifier": "security-advisories@github.com"}