{"id":"CVE-2022-43677","aliases":["GHSA-59hj-62f5-fgmc","GO-2022-1083"],"url":"https://o3.security/vulnerability/CVE-2022-43677","summary":"free5GC vulnerable to malformed NGAP message crashing the AMF and NGAP decoders","details":"In free5GC 3.2.1, a malformed NGAP message can crash the AMF and NGAP decoders via an index-out-of-range panic in aper.GetBitString.","published":"2022-10-24T00:00:00Z","modified":"2026-09-04T03:31:05.415801945Z","cvss":{"score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},"epss":{"score":0.00725,"percentile":0.52341,"asOf":"2026-09-16"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Go","name":"github.com/free5gc/free5gc","fixedVersion":null}],"fix":null,"references":[{"type":"WEB","url":"https://www.trendmicro.com/en_us/research/23/j/asn1-vulnerabilities-in-5g-cores.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/43xxx/CVE-2022-43677.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-43677"},{"type":"REPORT","url":"https://github.com/free5gc/free5gc/issues/402"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-04T03:31:05.415801945Z"}}