CVE-2026-44474
LOW
INFO
Priority: 0.01
BB Relevance:
32/100
Published: 2026-05-27
Modified: 2026-10-26
First seen: 2026-10-29
Status: active
Attack Surface
Adjacent
No Interaction
CVSS Vector Breakdown
AV:
Adjacent
AC:
High
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
Low
A:
Low
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.