What is CVE-2026-33903?

CVE-2026-33903 is a medium-severity vulnerability in Ellanetworks Core, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2026-03-27.

How severe is CVE-2026-33903?

Medium severity. CVSS v3 base score is 6.5 out of 10.

NULL pointer dereference in Ellanetworks Core

CVE-2026-33903

Ella Core is a 5G core designed for private networks. Versions prior to 1.7.0 panic when processing a specially crafted NGAP LocationReport message. An attacker able to send crafted NGAP messages to Ella Core can crash the process, causing…

EPSS: 0.000 (10.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Ellanetworks Core — versions < 1.7.0

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

https://github.com/ellanetworks/core/security/advisories/GHSA-f2f3-9cx3-wcmf (x_refsource_CONFIRM)
https://github.com/ellanetworks/core/commit/ec77a2ad4508f8488cb356fd45b2f1efd92587f8 (x_refsource_MISC)
https://github.com/ellanetworks/core/releases/tag/v1.7.0 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-33903?: CVE-2026-33903 is a medium-severity vulnerability in Ellanetworks Core, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2026-03-27.
How severe is CVE-2026-33903?: Medium severity. CVSS v3 base score is 6.5 out of 10.