← Vulnerability feed

Vulnerability record · CVE-2026-33281 · published 24 March 2026

CVE-2026-33281: Ellanetworks ella core vulnerability

Ellanetworks · Ella Core

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.

7.5 CVSS 3.1 High EPSS 0.50% · top 59.6% CWE-129 · CWE-129
7.5CVSS 3.1 base score
0.50%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

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/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

Track CVE-2026-33281 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2026-33282Ellanetworks ella core null pointer dereference vulnerabilityElla Core is a 5G core designed for private networks. Versions prior to 1.6.0 panic when processing a malformed NGAP LocationReport message with `ue-…EPSS 0.54%7.5CVE-2026-33283Ellanetworks ella core null pointer dereference vulnerabilityElla Core is a 5G core designed for private networks. Versions prior to 1.6.0 panic when processing malformed UL NAS Transport NAS messages without a…EPSS 0.50%7.5CVE-2026-32319Ellanetworks ella core out-of-bounds read vulnerabilityElla Core is a 5G core designed for private networks. Prior to 1.5.1, Ella Core panics when processing a malformed integrity protected NGAP/NAS messa…EPSS 0.54%7.5CVE-2026-32320Ellanetworks ella core out-of-bounds read vulnerabilityElla Core is a 5G core designed for private networks. Prior to 1.5.1, Ella Core panics when processing a PathSwitchRequest containing UE Security Cap…EPSS 0.32%7.2CVE-2026-33906Ellanetworks ella core improper privilege management vulnerabilityElla Core is a 5G core designed for private networks. Prior to version 1.7.0, the NetworkManager role was granted backup and restore permission. The …EPSS 0.56%6.5CVE-2026-34761Ellanetworks ella core null pointer dereference vulnerabilityElla Core is a 5G core designed for private networks. Prior to version 1.8.0, Ella Core panics when processing a NGAP handover failure message. An at…EPSS 0.42%6.5CVE-2026-33907Ellanetworks ella core null pointer dereference vulnerabilityElla Core is a 5G core designed for private networks. Versions prior to 1.7.0 panic when processing Authentication Response and Authentication Failur…EPSS 0.39%6.5CVE-2026-33903Ellanetworks ella core null pointer dereference vulnerabilityElla Core is a 5G core designed for private networks. Versions prior to 1.7.0 panic when processing a specially crafted NGAP LocationReport message. …EPSS 0.33%

Source: NIST National Vulnerability Database (record CVE-2026-33281), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.