CVE-2026-49420

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"75973F7C-645A-438C-A03B-C77AAAD20C15", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The RTSP handler in libalias rewrote outgoing packets into a fixed-length stack buffer without checking whether the rewritten data fit in the buffer, or whether the result fit back in the original packet.\n\nA host sending crafted RTSP traffic from inside a NAT gateway using libalias can overflow a stack buffer, potentially achieving remote code execution in the kernel (when using ipfw(4) NAT) or in the natd(8) process (which generally runs as the root user)."}, {"lang": "es", "value": "El gestor RTSP en libalias reescrib\u00eda los paquetes salientes en un b\u00fafer de pila de longitud fija sin comprobar si los datos reescritos cab\u00edan en el b\u00fafer, o si el resultado cab\u00eda de nuevo en el paquete original.\n\nUn host que env\u00eda tr\u00e1fico RTSP manipulado desde el interior de una pasarela NAT que utiliza libalias puede desbordar un b\u00fafer de pila, logrando potencialmente ejecuci\u00f3n remota de c\u00f3digo en el kernel (cuando se utiliza ipfw(4) NAT) o en el proceso natd(8) (que generalmente se ejecuta como el usuario root)."}], "id": "CVE-2026-49420", "lastModified": "2026-11-09T20:10:00.200", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-49420", "options": [{"exploitation": "none"}, {"automatable": "no"}, 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{}

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