CVE-2025-50518

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "cveTags": [{"sourceIdentifier": "cve@mitre.org", "tags": ["disputed"]}], "descriptions": [{"lang": "en", "value": "A use-after-free vulnerability exists in the coap_delete_pdu_lkd function within coap_pdu.c of the libcoap library. This issue occurs due to improper handling of memory after the freeing of a PDU object, leading to potential memory corruption or the possibility of executing arbitrary code. NOTE: this is disputed by the Supplier because it only occurs when an application uses libcoap incorrectly."}, {"lang": "es", "value": "Existe una vulnerabilidad de use-after-free en la funci\u00f3n coap_delete_pdu_lkd, dentro de coap_pdu.c de la librer\u00eda libcoap. Este problema se produce debido a un manejo inadecuado de la memoria tras la liberaci\u00f3n de un objeto PDU, lo que puede provocar corrupci\u00f3n de memoria o la ejecuci\u00f3n de c\u00f3digo arbitrario."}], "id": "CVE-2025-50518", "lastModified": "2026-06-17T09:35:08.873", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-50518", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2025-08-15T12:37:01.113004Z", "version": "2.0.3"}}]}, "published": "2025-08-14T16:15:35.417", "references": [{"source": "cve@mitre.org", "url": "https://github.com/IreneTheITCrowd/blog/blob/main/libcoap-vulnerability.md"}, {"source": "cve@mitre.org", "url": "https://github.com/IreneTheITCrowd/blog/issues/1"}, {"source": "cve@mitre.org", "url": "https://github.com/obgm/libcoap/issues/1724#issuecomment-3199631257"}, {"source": "cve@mitre.org", "url": "https://github.com/obgm/libcoap/issues/1724#issuecomment-3234613482"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"created": "2025-08-15T07:51:35.405360+00:00", "updated": "2025-08-15T07:51:35.405438+00:00", "vendors": ["libcoap", "libcoap$PRODUCT$libcoap"]}