What is CVE-2026-33281?

CVE-2026-33281 is a medium-severity vulnerability in Ellanetworks Core, classified under Improper Validation of Array Index. CVSS score: 6.5/10. Published 2026-03-23.

How severe is CVE-2026-33281?

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

Vulnerability in Ellanetworks Core

CVE-2026-33281

Ella Core is a 5G core designed for private networks. Versions prior to 1.6.0 panic when processing NGAP messages with invalid PDU Session IDs outside of 1-15. An attacker able to send crafted NGAP messages to Ella Core can crash the proce…

EPSS: 0.000 (6.3th 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

Weakness classification (CWE)

CWE-129 — Improper Validation of Array Index

References

https://github.com/ellanetworks/core/security/advisories/GHSA-q669-4gmv-g8mf (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-33281?: CVE-2026-33281 is a medium-severity vulnerability in Ellanetworks Core, classified under Improper Validation of Array Index. CVSS score: 6.5/10. Published 2026-03-23.
How severe is CVE-2026-33281?: Medium severity. CVSS v3 base score is 6.5 out of 10.