{"cve":"CVE-2026-44474","nvd":{"published":"2026-05-27T17:16:39.220","modified":"2026-10-26T11:10:00.157","status":"Deferred","description":"Ella Core is a 5G core designed for private networks. Prior to 1.10.0, Ella Core didn't enforce security rules on concurrent running of security procedures defined in TS 33.501 §6.9.5.1 — it could send a NAS Security Mode Command while an N2 handover was still pending (and vice versa). Concurrent Security Mode Command and N2 handover produce a KgNB mismatch between the UE and target gNB, causing the handover to fail. Requires a stalled gNB + re-registration race to trigger. This vulnerability is fixed in 1.10.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L","score":3.7},"cwes":["CWE-358"],"references":["https://github.com/ellanetworks/core/security/advisories/GHSA-mc29-hmx6-856q"],"products":[],"source":"nvd","synced_at":"2026-10-26T11:33:08.859761529+00:00"},"epss":{"cve":"CVE-2026-44474","score":0.00134,"percentile":0.02871,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-mc29-hmx6-856q","url":"https://osv.dev/vulnerability/GHSA-mc29-hmx6-856q","summary":"Ella Core has handover failures during concurrent Security Mode Command","modified":"2026-06-25T23:11:16.042165725Z","packages":[{"ecosystem":"Go","name":"github.com/ellanetworks/core","purl":"pkg:golang/github.com/ellanetworks/core","ranges":["<1.10.0"],"fixed":["1.10.0"]}]},{"id":"GO-2026-5502","url":"https://osv.dev/vulnerability/GO-2026-5502","summary":"Ella Core has handover failures during concurrent Security Mode Command in github.com/ellanetworks/core","modified":"2026-06-25T23:01:15.815029099Z","packages":[{"ecosystem":"Go","name":"github.com/ellanetworks/core","purl":"pkg:golang/github.com/ellanetworks/core","ranges":["<1.10.0"],"fixed":["1.10.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}