VulnerabilityAnalyzed

CVE-2026-33281

An attacker able to send crafted NGAP messages to Ella Core can crash the process, causing service disruption for all connected subscribers.

HIGH 7.5EPSS 0.39%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.39%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 3.1: 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.39% probability · 33th percentile
CISA KEV: Not listed
Weakness: CWE-129
Affected: ellanetworks/ella core
Source: security-advisories@github.com

References

https://github.com/ellanetworks/core/security/advisories/GHSA-q669-4gmv-g8mfVendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.