CVE-2026-27831

{"id": "CVE-2026-27831", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-27831", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-02-26T15:14:43.983653Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "bluedragonsecurity", "product": "rldns", "versions": [{"status": "affected", "version": "= 1.3"}]}]}], "published": "2026-02-26T01:16:24.770", "references": [{"url": "https://github.com/bluedragonsecurity/rldns-1.3-heap-out-of-bounds-vulnerability-fixed-in-rldns-1.4", "source": "security-advisories@github.com"}, {"url": "https://github.com/bluedragonsecurity/rldns/security/advisories/GHSA-fv38-45j4-g9x4", "source": "security-advisories@github.com"}, {"url": "https://github.com/bluedragonsecurity/rldns_archives/blob/main/diff/rldns-1.4.diff", "source": "security-advisories@github.com"}, {"url": "https://medium.com/@w1sdom/heap-based-buffer-over-read-vulnerability-in-rldns-1-3-5da3bccdc031", "source": "security-advisories@github.com"}, {"url": "https://github.com/bluedragonsecurity/rldns/security/advisories/GHSA-fv38-45j4-g9x4", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-125"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "rldns es un servidor DNS de c\u00f3digo abierto. La versi\u00f3n 2.3 tiene una lectura fuera de l\u00edmites basada en el heap que conduce a denegaci\u00f3n de servicio. La versi\u00f3n 1.4 contiene un parche para el problema."}], "lastModified": "2026-06-17T10:27:45.460", "sourceIdentifier": "security-advisories@github.com"}