{"id":"CVE-2023-37016","aliases":["EUVD-2023-40936","GHSA-c874-8h7r-5764"],"status":"published","title":"Open5GS MME versions \u003c= 2.6.4 contain an assertion that can be remotely triggered via a malformed...","description":"Open5GS MME versions \u003c= 2.6.4 contain an assertion that can be remotely triggered via a malformed ASN.1 packet over the S1AP interface. An attacker may send a `UE Context Modification Response` message missing a required `MME_UE_S1AP_ID` field to repeatedly crash the MME, resulting in denial of service.","severity":{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.00813,"percentile":0.57318,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-617"],"published":"2025-01-22T00:00:00Z","modified":"2026-10-28T02:31:02Z","products":[{"vendor":"open5gs","product":"open5gs"}],"references":[{"url":"https://cellularsecurity.org/ransacked","tags":["Exploit","Technical Description","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-37016","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-c874-8h7r-5764"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/37xxx/CVE-2023-37016.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2023-37016","description":"Open5GS MME versions \u003c= 2.6.4 contain an assertion that can be remotely triggered via a malformed ASN.1 packet over the S1AP interface. An attacker may send a `UE Context Modification Response` message missing a required `MME_UE_S1AP_ID` field to repeatedly crash the MME, resulting in denial of service.","status":"published","published":"2025-01-22T00:00:00Z","modified":"2025-02-06T21:30:29.093Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:35:16.126506Z"}],"euvd":[{"id":"EUVD-2023-40936","description":"Open5GS MME versions \u003c= 2.6.4 contain an assertion that can be remotely triggered via a malformed ASN.1 packet over the S1AP interface. An attacker may send a `UE Context Modification Response` message missing a required `MME_UE_S1AP_ID` field to repeatedly crash the MME, resulting in denial of service.","status":"published","published":"2025-01-22T00:00:00Z","modified":"2025-02-06T21:30:29Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T00:04:02.347135Z"}],"ghsa":[{"id":"GHSA-c874-8h7r-5764","title":"Open5GS MME versions \u003c= 2.6.4 contain an assertion that can be remotely triggered via a malformed...","description":"Open5GS MME versions \u003c= 2.6.4 contain an assertion that can be remotely triggered via a malformed ASN.1 packet over the S1AP interface. An attacker may send a `UE Context Modification Response` message missing a required `MME_UE_S1AP_ID` field to repeatedly crash the MME, resulting in denial of service.","status":"published","published":"2025-01-22T15:32:35Z","modified":"2025-02-07T03:33:04Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:59:49.949775Z"}],"nvd":[{"id":"CVE-2023-37016","description":"Open5GS MME versions \u003c= 2.6.4 contain an assertion that can be remotely triggered via a malformed ASN.1 packet over the S1AP interface. An attacker may send a `UE Context Modification Response` message missing a required `MME_UE_S1AP_ID` field to repeatedly crash the MME, resulting in denial of service.","status":"published","published":"2025-01-22T15:15:11.207Z","modified":"2026-06-17T06:07:30.003Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:09:20.080574Z"}],"osv":[{"id":"CVE-2023-37016","description":"Open5GS MME versions \u003c= 2.6.4 contain an assertion that can be remotely triggered via a malformed ASN.1 packet over the S1AP interface. An attacker may send a `UE Context Modification Response` message missing a required `MME_UE_S1AP_ID` field to repeatedly crash the MME, resulting in denial of service.","status":"published","published":"2025-01-22T00:00:00Z","modified":"2026-10-28T02:31:02.871426111Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:32.510144Z"}]}}