TI-2026-32413 Aliases CVE-2026-44474 GHSA-mc29-hmx6-856q

Ella Core: Handover failures during concurrent Security Mode Command

LOW 17CWE-358Published 2026-05-27 · Updated 2026-05-27

Key facts

Attack vector: Adjacent network
Privileges required: Low
User interaction: None
Attack complexity: High
Impact type: —
Confidentiality · integrity · availability: None · Low · Low
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00134 2nd percentileScored 2026-11-07

Fix Fixed core (ellanetworks): 1.10.0github.com/ellanetworks/core (Go): 1.10.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
ellanetworks	core	before 1.10.0	1.10.0	Patch available	CNA
—	github.com/ellanetworks/core (Go)	before 1.10.0	1.10.0	Patch available	GHSA-mc29-hmx6-856q

core Vendorellanetworks Affected before 1.10.0 Fixed in 1.10.0 Patch available CNA
github.com/ellanetworks/core (Go) Vendor— Affected before 1.10.0 Fixed in 1.10.0 Patch available GHSA-mc29-hmx6-856q

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:ellanetworks:ella_core::::::::	—	—	ellanetworks

cpe:2.3:a:ellanetworks:ella_core:*:*:*:*:*:*:*:* Versions — — ·ellanetworks

Remediation

Fix · CNA core (ellanetworks) Fixed in 1.10.0
Fix · GHSA-mc29-hmx6-856q github.com/ellanetworks/core (Go) Fixed in 1.10.0 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-44474
2026-10-03 Alias added: GHSA-mc29-hmx6-856q

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-44474

Other 2

TI-2026-24847 Ella Core: Unauthenticated AMF DoS via malformed InitialUEMessage with undersized integrity-protected NAS payload CVSS 3.1HIGH 7.5
TI-2026-26264 Ella Core has Privilege Escalation via Database Restore by NetworkManager role CVSS 3.1HIGH 7.2
TI-2026-25694 Ella Core panics on malformed ULNASTransport Message without a Request Type CVSS 3.1HIGH 7.5
TI-2026-25693 Ella Core panics on malformed NGAP Location Report CVSS 3.1HIGH 7.5
TI-2026-25692 Ella Core panics on invalid PDU Session IDs in NGAP messages CVSS 3.1HIGH 7.5
TI-2026-24848 Ella Core: AMF DoS via malformed PathSwitchRequest with empty NR security capability bitstrings CVSS 3.1HIGH 7.5

See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences