CVE-2026-44473: CWE-358: Improperly Implemented Security Check for Standard in ellanetworks core
CVE-2026-44473 is a high-severity vulnerability in ellanetworks core (Ella Core), a 5G core designed for private networks. Versions prior to 1.10.0 allow a radio with a valid NG Setup to send a forged PDUSessionResourceSetupResponse containing any UE's AMF-UE-NGAP-ID. The core fails to verify that the message arrived on the SCTP association bound to that UE's logical NG-connection, resulting in the creation of a GTP tunnel towards the radio. This improper security check can lead to denial of service or disruption of network operations. The vulnerability is fixed in version 1.10.0. No known exploits in the wild have been reported.
AI Analysis
Technical Summary
Ella Core versions before 1.10.0 contain a vulnerability where the system does not properly verify that a PDUSessionResourceSetupResponse message is received on the correct SCTP association bound to the UE's logical NG-connection. This allows a radio with a valid NG Setup to forge such a message with any UE's AMF-UE-NGAP-ID, causing the core to create a GTP tunnel incorrectly. This is classified under CWE-358 (Improperly Implemented Security Check) and CWE-863 (Incorrect Authorization). The issue is resolved in version 1.10.0.
Potential Impact
An attacker controlling a radio with a valid NG Setup can forge PDUSessionResourceSetupResponse messages to cause the core to create unauthorized GTP tunnels. This can lead to denial of service or disruption of network functions. The confidentiality impact is low, integrity impact is none, and availability impact is high as per the CVSS vector. No known exploits have been reported in the wild.
Mitigation Recommendations
Upgrade to ellanetworks core version 1.10.0 or later where this vulnerability is fixed. Patch status is not explicitly confirmed in the vendor advisory, but the description states the issue is fixed in 1.10.0. Until upgrading, restrict access to radios with valid NG Setup and monitor for anomalous PDUSessionResourceSetupResponse messages if possible.
CVE-2026-44473: CWE-358: Improperly Implemented Security Check for Standard in ellanetworks core
Description
CVE-2026-44473 is a high-severity vulnerability in ellanetworks core (Ella Core), a 5G core designed for private networks. Versions prior to 1.10.0 allow a radio with a valid NG Setup to send a forged PDUSessionResourceSetupResponse containing any UE's AMF-UE-NGAP-ID. The core fails to verify that the message arrived on the SCTP association bound to that UE's logical NG-connection, resulting in the creation of a GTP tunnel towards the radio. This improper security check can lead to denial of service or disruption of network operations. The vulnerability is fixed in version 1.10.0. No known exploits in the wild have been reported.
CVSS v3.1
Score 7.1high
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Ella Core versions before 1.10.0 contain a vulnerability where the system does not properly verify that a PDUSessionResourceSetupResponse message is received on the correct SCTP association bound to the UE's logical NG-connection. This allows a radio with a valid NG Setup to forge such a message with any UE's AMF-UE-NGAP-ID, causing the core to create a GTP tunnel incorrectly. This is classified under CWE-358 (Improperly Implemented Security Check) and CWE-863 (Incorrect Authorization). The issue is resolved in version 1.10.0.
Potential Impact
An attacker controlling a radio with a valid NG Setup can forge PDUSessionResourceSetupResponse messages to cause the core to create unauthorized GTP tunnels. This can lead to denial of service or disruption of network functions. The confidentiality impact is low, integrity impact is none, and availability impact is high as per the CVSS vector. No known exploits have been reported in the wild.
Mitigation Recommendations
Upgrade to ellanetworks core version 1.10.0 or later where this vulnerability is fixed. Patch status is not explicitly confirmed in the vendor advisory, but the description states the issue is fixed in 1.10.0. Until upgrading, restrict access to radios with valid NG Setup and monitor for anomalous PDUSessionResourceSetupResponse messages if possible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-06T17:18:51.782Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a171ce4e29bf47b50d1de3b
Added to database: 05/27/2026, 16:33:40 UTC
Last enriched: 06/03/2026, 20:49:03 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 67
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