CVE-2026-30075

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:openairinterface:oai-cn5g-amf:2.2.0:*:*:*:*:*:*:*", "matchCriteriaId": "1BB4900E-B5A7-40ED-8DA6-4E372D5036D9", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "OpenAirInterface Version 2.2.0 has a Buffer Overflow vulnerability in processing UplinkNASTransport containing Authentication Response containing a NAS PDU with oversize response (For example 100 byte). The response is decoded by AMF and passed to the AUSF component for verification. AUSF crashes on receiving this oversize response. This can prohibit users from further registration and verification and can cause Denial of Services (DoS)."}, {"lang": "es", "value": "OpenAirInterface Versi\u00f3n 2.2.0 tiene una vulnerabilidad de desbordamiento de b\u00fafer al procesar UplinkNASTransport que contiene una Respuesta de Autenticaci\u00f3n que contiene una PDU NAS con una respuesta de tama\u00f1o excesivo (por ejemplo, 100 bytes). La respuesta es decodificada por el AMF y pasada al componente AUSF para su verificaci\u00f3n. AUSF falla al recibir esta respuesta de tama\u00f1o excesivo. Esto puede impedir que los usuarios se registren y verifiquen posteriormente y puede causar Denegaci\u00f3n de Servicios (DoS)."}], "id": "CVE-2026-30075", "lastModified": "2026-07-25T10:10:00.167", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-30075", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-04-09T20:48:12.559806Z", "version": "2.0.3"}}]}, "published": "2026-04-08T17:21:18.503", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://gitlab.eurecom.fr/oai/cn5g/oai-cn5g-ausf/-/issues/6"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://gitlab.eurecom.fr/oai/cn5g/oai-cn5g-ausf/-/issues?show=eyJpaWQiOiI2IiwiZnVsbF9wYXRoIjoib2FpL2NuNWcvb2FpLWNuNWctYXVzZiIsImlkIjo1NDE5fQ%3D%3D"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://gitlab.eurecom.fr/oai/cn5g/oai-cn5g-ausf/-/issues?show=eyJpaWQiOiI2IiwiZnVsbF9wYXRoIjoib2FpL2NuNWcvb2FpLWNuNWctYXVzZiIsImlkIjo1NDE5fQ%3D%3D"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-120"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.2.0"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "n/a", "source": "cna", "vendor": "n/a"}, "product": "oai-cn5g-ausf", "vendor": "openairinterface"}], "analysis": {"en": {"generated_at": "2026-04-14T18:05:53.693669+00:00", "value": {"mitigation_remediation": ["Upgrade OpenAirInterface to the latest available version that resolves the buffer overflow issue.", "Check for and apply any vendor\u2011supplied patches or hotfixes for the CN5G AMF component.", "If an upgrade is not immediately possible, isolate the AMF/AUSF functions from untrusted traffic or implement ingress filtering to reject malformed Authentication Response messages.", "Monitor system logs for repeated crashes or anomalous authentication attempts that could indicate exploitation attempts.", "Keep the network functions updated and conduct periodic security reviews following the latest advisories from the OpenAirInterface project."], "summary": {"action": "Apply Patch", "impact": "Denial of Service"}, "threat_synthesis": {"affected_systems": "The vulnerability affects the OpenAirInterface CN5G AMF component, specifically version 2.2.0. No other versions are listed as impacted.", "description_and_impact": "A buffer overflow occurs in OpenAirInterface Version 2.2.0 when the AMF processes an Oversized Authentication Response within a UplinkNASTransport. The oversized PDU is decoded by the AMF and then forwarded to AUSF, where it triggers a crash. The resulting crash prevents users from completing registration and verification, leading to a denial of service for the affected network functions.", "risk_and_exploitability": "The CVSS score of 7.5 indicates a high severity with a substantial impact on availability. The EPSS score below 1% suggests current exploitation attempts are unlikely, and it is not listed in the CISA KEV catalog. Based on the description, the likely attack vector is a crafted Authentication Response packet sent from the network or a compromised UE to the AMF; this requires network access to the AMF/AUSF communication path."}}}}, "created": "2026-04-08T19:44:36.036905+00:00", "updated": "2026-04-15T16:15:11.956058+00:00", "vendors": ["openairinterface", "openairinterface$PRODUCT$oai-cn5g-ausf"]}