CVE-2026-33907: Ellanetworks Ella Core

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Ella Core is a 5G core designed for private networks. Versions prior to 1.7.0 panic when processing Authentication Response and Authentication Failure NAS message missing IEs. 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 1.7.0 added IE presence verification to NAS message handling.

Affected products

• Ellanetworks Ella Core: before 1.7.0 (fixed in 1.7.0)

Published 2026-03-27. Last modified 2026-06-17.