CVE-2026-33907
Medium
Description
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.
SeverityMedium
CVSS6.5
Exploit probability—
ProductEllanetworks Ella Core
PublishedMar 27, 2026
First seenMar 27, 2026
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- ellanetworks ella_core1.7.0 or later
- github.com/ellanetworks/core1.7.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ellanetworks ella_core | v < 1.7.0 | 1.7.0 |
| github.com/ellanetworks/coreGo | v < 1.7.0 | 1.7.0 |
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