CVE-2026-33283

Ella Core panics on malformed ULNASTransport Message without a Request Type

State: Published
Severity: 6.5 Medium
Published: Mar 23, 2026
Updated: Mar 24, 2026
Reserved: Mar 18, 2026

Description

Ella Core is a 5G core designed for private networks. Versions prior to 1.6.0 panic when processing malformed UL NAS Transport NAS messages without a Request Type. An attacker able to send crafted NAS messages to Ella Core can crash the process, causing service disruption for all connected subscribers. No authentication is required. Version 1.6.0 adds a guard when receiving an UL NAS Message without a Request Type given no SM Context.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	GitHub_M

Weaknesses

CWE-476 NULL Pointer Dereference

Affected Products

Product	Versions
coreellanetworks	< 1.6.0Affected

References

https://github.com/ellanetworks/core/security/advisories/GHSA-3366-gw57-fcm5

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.