Vulnerability · Published Mar 27, 2026 · Assigned by GitHub_M
CVE-2026-33907Ella Core Panics during NAS Authentication Response/Failure with missing IEs
Medium 6.5
In plain English
A medium-severity null pointer dereference in core from ellanetworks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/ellanetworks/core | 1.7.0 | GHSA-55q8-2gwx-29pc |
| Go | github.com/ellanetworks/core | 1.7.0 | GO-2026-4872 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ellanetworks | core | < 1.7.0 |
Weakness: CWE-476 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/ellanetworks/core/security/advisories/GHSA-55q8-2gwx-29pc x_refsource_CONFIRM
- https://github.com/ellanetworks/core/commit/52962660e3bd3e23c7e96b0da270ac1e0e705273 x_refsource_MISC
- https://github.com/ellanetworks/core/releases/tag/v1.7.0 x_refsource_MISC