CVE-2025-65495

{"id": "CVE-2025-65495", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "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}]}, "published": "2025-11-24T14:15:47.053", "references": [{"url": "https://github.com/obgm/libcoap/issues/1744", "tags": ["Issue Tracking"], "source": "cve@mitre.org"}, {"url": "https://github.com/obgm/libcoap/pull/1750", "tags": ["Issue Tracking", "Patch"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-195"}]}], "descriptions": [{"lang": "en", "value": "Integer signedness error in tls_verify_call_back() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted TLS certificate that causes i2d_X509() to return -1 and be misused as a malloc() size parameter."}], "lastModified": "2025-12-01T17:15:30.583", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:libcoap:libcoap:4.3.5:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "78120234-9F76-4010-AD0E-FEA4DE8A76F9"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}