CVE-2026-44474 (GCVE-0-2026-44474)

Vulnerability from cvelistv5 – Published: 2026-05-27 15:14 – Updated: 2026-05-27 17:23
VLAI
Title
Ella Core: Handover failures during concurrent Security Mode Command
Summary
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.
Severity
3.7 (Low)
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-27 17:22 UTC
CWE
  • CWE-358 - Improperly Implemented Security Check for Standard
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
ellanetworks core Affected: < 1.10.0
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