CVE-2026-33281 MEDIUM

CVE-2026-33281: Ella Core panics on invalid PDU Session IDs in NGAP messages

Vendor Ellanetworks
Product core
Weakness CWE-129
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 NGAP messages with invalid PDU Session IDs outside of 1-15. An attacker able to send crafted NGAP messages to Ella Core can crash the process, causing service disruption for all connected subscribers. No authentication is required. Version 1.6.0 added PDU Session ID validations during NGAP message handling.

Key dates

02Disclosure timeline

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