CVE-2026-33903: CWE-476: NULL Pointer Dereference in ellanetworks core
Ella Core is a 5G core designed for private networks. Versions prior to 1.7.0 panic when processing a specially crafted NGAP LocationReport message. An attacker able to send crafted NGAP messages to Ella Core can crash the process, causing service disruption for all connected subscribers. Version 1.7.0 adds guards in NGAP Location Report handler.
AI Analysis
Technical Summary
CVE-2026-33903 is a medium severity vulnerability (CVSS 6.5) in ellanetworks core, a 5G core designed for private networks. The vulnerability is a NULL pointer dereference (CWE-476) triggered by processing a maliciously crafted NGAP LocationReport message. This leads to a process panic and crash, disrupting service availability for all subscribers connected to the affected core. The issue affects versions prior to 1.7.0, which introduced protective checks in the NGAP Location Report handler to mitigate this flaw.
Potential Impact
Exploitation of this vulnerability causes a denial of service by crashing the core process, resulting in service disruption for all connected subscribers. There is no impact on confidentiality or integrity reported. The attack vector is adjacent network (AV:A), requiring no privileges or user interaction.
Mitigation Recommendations
Upgrade to ellanetworks core version 1.7.0 or later, which includes official fixes adding guards in the NGAP Location Report handler to prevent the NULL pointer dereference. Since no patch links are provided, verify availability and apply the update through official vendor channels. No other mitigations are indicated.
CVE-2026-33903: CWE-476: NULL Pointer Dereference in ellanetworks core
Description
Ella Core is a 5G core designed for private networks. Versions prior to 1.7.0 panic when processing a specially crafted NGAP LocationReport message. An attacker able to send crafted NGAP messages to Ella Core can crash the process, causing service disruption for all connected subscribers. Version 1.7.0 adds guards in NGAP Location Report handler.
CVSS v3.1
Score 6.5medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-33903 is a medium severity vulnerability (CVSS 6.5) in ellanetworks core, a 5G core designed for private networks. The vulnerability is a NULL pointer dereference (CWE-476) triggered by processing a maliciously crafted NGAP LocationReport message. This leads to a process panic and crash, disrupting service availability for all subscribers connected to the affected core. The issue affects versions prior to 1.7.0, which introduced protective checks in the NGAP Location Report handler to mitigate this flaw.
Potential Impact
Exploitation of this vulnerability causes a denial of service by crashing the core process, resulting in service disruption for all connected subscribers. There is no impact on confidentiality or integrity reported. The attack vector is adjacent network (AV:A), requiring no privileges or user interaction.
Mitigation Recommendations
Upgrade to ellanetworks core version 1.7.0 or later, which includes official fixes adding guards in the NGAP Location Report handler to prevent the NULL pointer dereference. Since no patch links are provided, verify availability and apply the update through official vendor channels. No other mitigations are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-03-24T15:41:47.491Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69c6efd03c064ed76ff473fd
Added to database: 03/27/2026, 21:00:00 UTC
Last enriched: 04/04/2026, 11:02:18 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 172
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