Vulnerability · Published Mar 23, 2026 · Assigned by GitHub_M

CVE-2026-33281Ella Core panics on invalid PDU Session IDs in NGAP messages

Medium 6.5

In plain English

A medium-severity security flaw in core from ellanetworks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.4%top 64.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/ellanetworks/core	1.6.0	GHSA-q669-4gmv-g8mf
Go	github.com/ellanetworks/core	1.6.0	GO-2026-4783

Affected products (as reported)

Vendor	Product	Versions
ellanetworks	core	< 1.6.0

Weakness: CWE-129 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

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