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.
Published: 2026-05-27
Score: 3.7 Low
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Github GHSA Github GHSA GHSA-mc29-hmx6-856q Ella Core has handover failures during concurrent Security Mode Command
History

Wed, 27 May 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 27 May 2026 16:30:00 +0000

Type Values Removed Values Added
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.
Title Ella Core: Handover failures during concurrent Security Mode Command
Weaknesses CWE-358
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L'}


Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-27T17:23:14.076Z

Reserved: 2026-05-06T17:18:51.782Z

Link: CVE-2026-44474

cve-icon Vulnrichment

Updated: 2026-05-27T17:22:55.996Z

cve-icon NVD

Status : Deferred

Published: 2026-05-27T17:16:39.220

Modified: 2026-05-27T20:03:09.937

Link: CVE-2026-44474

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses