What is CVE-2026-33283?

CVE-2026-33283 is a medium-severity vulnerability in Ellanetworks Core, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2026-03-24.

How severe is CVE-2026-33283?

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

NULL pointer dereference in Ellanetworks Core

CVE-2026-33283

Ella Core is a 5G core designed for private networks. Versions prior to 1.6.0 panic when processing malformed UL NAS Transport NAS messages without a Request Type. 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 1.6.0 adds a guard when receiving an UL NAS Message without a Request Type given no SM Context.

EPSS: 0.004 (29.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

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

Affected products

Ellanetworks Core — versions < 1.6.0
Ellanetworks Ella_core

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2026-33283?: CVE-2026-33283 is a medium-severity vulnerability in Ellanetworks Core, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2026-03-24.
How severe is CVE-2026-33283?: Medium severity. CVSS v3 base score is 6.5 out of 10.