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CVE-2026-33281

HIGH CVSS 3.1: 7.5 EPSS 0.02%
Updated Mar 24, 2026
Ellanetworks
Parameter Value
CVSS 7.5 (HIGH)
Affected Versions before 1.6.0
Fixed In 1.6.0
Type CWE-129 (Improper Validation of Array Index)
Vendor Ellanetworks
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Ellanetworks Ella_Core
cpe:2.3:a:ellanetworks:ella_core:*:*:*:*:*:*:*:*
1.6.0