{"dataType": "CVE_RECORD", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2026-30075", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2026-04-09T20:48:57.341Z", "dateReserved": "2026-03-04T00:00:00.000Z", "datePublished": "2026-04-08T00:00:00.000Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-04-08T16:43:29.076Z"}, "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)."}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "https://gitlab.eurecom.fr/oai/cn5g/oai-cn5g-ausf/-/issues?show=eyJpaWQiOiI2IiwiZnVsbF9wYXRoIjoib2FpL2NuNWcvb2FpLWNuNWctYXVzZiIsImlkIjo1NDE5fQ%3D%3D"}, {"url": "https://gitlab.eurecom.fr/oai/cn5g/oai-cn5g-ausf/-/issues/6"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}]}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-120", "lang": "en", "description": "CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')"}]}], "references": [{"url": "https://gitlab.eurecom.fr/oai/cn5g/oai-cn5g-ausf/-/issues?show=eyJpaWQiOiI2IiwiZnVsbF9wYXRoIjoib2FpL2NuNWcvb2FpLWNuNWctYXVzZiIsImlkIjo1NDE5fQ%3D%3D", "tags": ["exploit"]}], "metrics": [{"cvssV3_1": {"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"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-04-09T20:48:12.559806Z", "id": "CVE-2026-30075", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-09T20:48:57.341Z"}}]}, "dataVersion": "5.2"}

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{"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)."}], "id": "CVE-2026-30075", "lastModified": "2026-04-09T21:16:07.563", "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"}]}, "published": "2026-04-08T17:21:18.503", "references": [{"source": "cve@mitre.org", "url": "https://gitlab.eurecom.fr/oai/cn5g/oai-cn5g-ausf/-/issues/6"}, {"source": "cve@mitre.org", "url": "https://gitlab.eurecom.fr/oai/cn5g/oai-cn5g-ausf/-/issues?show=eyJpaWQiOiI2IiwiZnVsbF9wYXRoIjoib2FpL2NuNWcvb2FpLWNuNWctYXVzZiIsImlkIjo1NDE5fQ%3D%3D"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://gitlab.eurecom.fr/oai/cn5g/oai-cn5g-ausf/-/issues?show=eyJpaWQiOiI2IiwiZnVsbF9wYXRoIjoib2FpL2NuNWcvb2FpLWNuNWctYXVzZiIsImlkIjo1NDE5fQ%3D%3D"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Undergoing Analysis", "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": "2026-04-09T23:08:42.972716+00:00", "value": {"mitigation_remediation": ["Apply an updated release of OpenAirInterface that addresses the buffer overflow", "Confirm that all installed NF components are running the patched version", "If no patch is available, block or filter oversized Authentication Response packets at the network edge", "Continuously monitor log files for AUSF crashes to detect exploitation attempts"], "summary": {"action": "Immediate Patch", "impact": "Denial of Service via buffer overflow"}, "threat_synthesis": {"affected_systems": "The flaw is confined to the OpenAirInterface 2.2.0 stack, specifically the AUSF module that is invoked during UplinkNASTransport handling. No other vendors or product versions are reported or listed as affected by the CVE submitter. Operators deploying this release must verify that their AUSF instances run at or below the vulnerable code path.", "description_and_impact": "A buffer overflow exists in OpenAirInterface 2.2.0 when the AUSF component processes a UplinkNASTransport containing an Authentication Response with an excessively large NAS PDU, such as 100 bytes. The decoding routine overflows, causing the AUSF to crash. The crash disables user authentication and registration, thereby denying service to affected users. This weakness is identified as CWE-120, a classic buffer overflow vulnerability with potential integrity impact.", "risk_and_exploitability": "The vulnerability scores 7.5 on the CVSS v3.1 scale, indicating a high severity attack. The EPSS value is below 1\u2009%, suggesting a modest likelihood of exploitation in the wild, and the issue is not yet enumerated in the CISA KEV catalog. The most plausible attack vector is remote network-based: an adversary can craft and send the oversized UplinkNASTransport message to a target AUSF node, triggering the crash without needing local privileges."}}}}, "created": "2026-04-08T19:44:36.036905+00:00", "updated": "2026-04-10T09:41:08.966647+00:00", "vendors": ["openairinterface", "openairinterface$PRODUCT$oai-cn5g-ausf"]}