CVE-2026-33281

Ella Core panics on invalid PDU Session IDs in NGAP messages

State: Published
Severity: 6.5 Medium
Published: Mar 23, 2026
Updated: Mar 24, 2026
Reserved: Mar 18, 2026

Description

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 process, causing service disruption for all connected subscribers. No authentication is required. Version 1.6.0 added PDU Session ID validations during NGAP message handling.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	GitHub_M

Weaknesses

CWE-129 Improper Validation of Array Index

Affected Products

Product	Versions
coreellanetworks	< 1.6.0Affected

References

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

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