{"id":"CVE-2026-44474","state":"PUBLISHED","title":"Ella Core: Handover failures during concurrent Security Mode Command","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.","publishedAt":"2026-05-27T15:14:49.390Z","updatedAt":"2026-05-27T17:23:14.076Z","severity":{"score":3.7,"label":"Low","version":"3.1","vector":"CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["ellanetworks core"],"affected":[{"vendor":"ellanetworks","product":"core","versions":[{"version":"< 1.10.0","status":"affected"}]}],"references":["https://github.com/ellanetworks/core/security/advisories/GHSA-mc29-hmx6-856q"],"weaknesses":["CWE-358"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/44xxx/CVE-2026-44474.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-44474","state":"PUBLISHED","datePublished":"2026-05-27T15:14:49.390Z","dateUpdated":"2026-05-27T17:23:14.076Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-06T17:18:51.782Z"},"containers":{"cna":{"title":"Ella Core: Handover failures during concurrent Security Mode Command","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"ellanetworks","product":"core","versions":[{"version":"< 1.10.0","status":"affected"}]}],"references":[{"url":"https://github.com/ellanetworks/core/security/advisories/GHSA-mc29-hmx6-856q","name":"https://github.com/ellanetworks/core/security/advisories/GHSA-mc29-hmx6-856q","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"ADJACENT_NETWORK","availabilityImpact":"LOW","baseScore":3.7,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-358","lang":"en","description":"CWE-358: Improperly Implemented Security Check for Standard","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-05-27T15:14:49.390Z"},"source":{"advisory":"GHSA-mc29-hmx6-856q","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-27T17:22:21.103731Z","id":"CVE-2026-44474","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-27T17:23:14.076Z"}}]}}}