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CVE-2026-61550

Estado: Pendiente de análisisCrítica (9.8)—

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.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

AV:N/AC:L/PR:N permite explotación remota sin autenticación (T1190). Reemplazo de certificados y suplantación de nodos confiables permite asumir identidad de endpoint (T1078, T1550.001 impersonation).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Application Developer GuidancePrivileged Account ManagementAccount Use PoliciesActive Directory ConfigurationVulnerability ScanningUser Training

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Icinga — Icinga 2AI

CWE

Referencias

JSON original (NVD)

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{
  "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"
}