CVE-2026-44474
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.
SeverityLow
CVSS3.7
Exploit probability—
ProductGithub.com/ellanetworks/core
PublishedMay 27, 2026
First seenMay 27, 2026
Weakness typeCWE-358CWE-358
How to fix
Update
- github.com/ellanetworks/core1.10.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| github.com/ellanetworks/coreGo | v < 1.10.0 | 1.10.0 |
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