CVE-2026-33283 MEDIUM

CVE-2026-33283: Ella Core panics on malformed ULNASTransport Message without a Request Type

Vendor Ellanetworks
Product core
Weakness CWE-476
Published March 23, 2026
Last update March 24, 2026
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 23, 2026 CVE published
March 24, 2026 Record updated