{"id":"CVE-2026-117068","title":"An integer underflow vulnerability in the NAS decoder of OpenAirInterface (OAI) CN5G AMF v2.2.1 allows an unauthenticated remote attacker to cause a denial of service (DoS) via crafted NAS Registration Requests containing a truncated SUC…","summary":"An integer underflow vulnerability in the NAS decoder of OpenAirInterface (OAI) CN5G AMF v2.2.1 allows an unauthenticated remote attacker to cause a denial of service (DoS) via crafted NAS Registration Requests containing a truncated SUC…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"adp","ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-11-06T19:14:16.233775Z"},"exploitAvailable":true,"published":"2026-11-02","updated":"2026-11-06","sourceUpdated":"2026-11-06T19:14:19.713Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-117068","references":[{"url":"https://github.com/openairinterface/oai-cn5g-ausf/issues/7"},{"url":"https://gist.github.com/hackeryounow/aa1df06bb785bda0952a30939dcb9a76"},{"url":"https://github.com/openairinterface/oai-cn5g-amf/pull/26/commits/c5178c644f87c5ef8828353192fea464d977e17b"}],"tags":["cve.org","exploit-available"],"epss":0.00424,"epssPercentile":0.36905,"ingestedAt":"2026-11-05T19:30:42.725Z","slug":"CVE-2026-117068","body":"## Overview\n\nAn integer underflow vulnerability in the NAS decoder of OpenAirInterface (OAI) CN5G AMF v2.2.1 allows an unauthenticated remote attacker to cause a denial of service (DoS) via crafted NAS Registration Requests containing a truncated SUCI in the 5GS Mobile Identity IE. Insufficient length validation in the DecodeSuci() function results in an out-of-bounds heap read, causing the AMF process to crash.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":235626,"id":"CVE-2026-117068","ts":1793995426106,"field":"exploit_available","old":"false","new":"true"},{"seq":235625,"id":"CVE-2026-117068","ts":1793995426106,"field":"cvss","old":null,"new":"7.5"},{"seq":235624,"id":"CVE-2026-117068","ts":1793995426106,"field":"severity","old":"none","new":"high"}]}