CVE-2026-33281 Details
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.
A denial-of-service vulnerability has been identified in Ella Core versions prior to 1.6.0. The issue arises when the software processes NGAP messages containing invalid PDU Session IDs outside the range of 1 to 15, leading to a process crash. This disruption affects all connected subscribers, causing a significant service outage. Notably, no authentication is required to exploit this vulnerability.
Users can upgrade to Ella Core version 1.6.0 or later, where this vulnerability has been addressed by adding PDU Session ID validations during NGAP message handling.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 24, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/ellanetworks/core/security/advisories/GHSA-q669-4gmv-g8mf | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-129 | Improper Validation of Array Index | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| ellanetworks ella core | < 1.6.0 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 24, 2026 | Initial Analysis | [email protected] |
| Mar 24, 2026 | New CVE Received | [email protected] |