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CVE-2026-27831

Estado: AplazadaAlta (7.5)—

rldns is an open source DNS server. Version 1.3 has a heap-based out-of-bounds read that leads to denial of service. Version 1.4 contains a patch for the issue.

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.

Vector CVSS muestra AV:N/AC:L/PR:N (red sin privilegios, sin interacción), indicando T1190. OOB read en DNS remoto causa DoS (A:H), clasificado como T1499.004 (consumo de recursos de la aplicación).

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

Filter Network TrafficVulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Isolation and Sandboxing

Tecnologías afectadas (1)

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

Rldns — RldnsAI

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-27831",
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          "id": "CVE-2026-27831",
          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "poc"
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              "automatable": "yes"
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          ],
          "version": "2.0.3",
          "timestamp": "2026-02-26T15:14:43.983653Z"
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          "integrityImpact": "NONE",
          "userInteraction": "NONE",
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          "availabilityImpact": "HIGH",
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  "published": "2026-02-26T01:16:24.770",
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      "url": "https://medium.com/@w1sdom/heap-based-buffer-over-read-vulnerability-in-rldns-1-3-5da3bccdc031",
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      "description": [
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    }
  ],
  "lastModified": "2026-06-17T10:27:45.460",
  "sourceIdentifier": "security-advisories@github.com"
}