What is CVE-2026-33904?

CVE-2026-33904 is a medium-severity vulnerability in Ellanetworks Core, classified under CWE-833. CVSS score: 6.5/10. Published 2026-03-27.

How severe is CVE-2026-33904?

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

Vulnerability in Ellanetworks Core

CVE-2026-33904

Ella Core is a 5G core designed for private networks. Prior to version 1.7.0, a deadlock in the AMF's SCTP notification handler causes the entire AMF control plane to hang until the process is restarted. An attacker with access to the N2 i…

EPSS: 0.000 (6.4th 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-833

References

https://github.com/ellanetworks/core/security/advisories/GHSA-9h59-p45g-445h (x_refsource_CONFIRM)
https://github.com/ellanetworks/core/commit/999f606c5cae261471d9e3f063d7ecd1bd754076 (x_refsource_MISC)
https://github.com/ellanetworks/core/releases/tag/v1.7.0 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-33904?: CVE-2026-33904 is a medium-severity vulnerability in Ellanetworks Core, classified under CWE-833. CVSS score: 6.5/10. Published 2026-03-27.
How severe is CVE-2026-33904?: Medium severity. CVSS v3 base score is 6.5 out of 10.