CVE-2026-33903

MEDIUM

Ella Core panics when processing a crafted NGAP LocationReport message

Title source: cna

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.

References (3)

[X_Refsource_Confirm] https://github.com/ellanetworks/core/security/advisories/GHSA-f2f3-9cx3-wcmf

[X_Refsource_Misc] https://github.com/ellanetworks/core/commit/ec77a2ad4508f8488cb356fd45b2f1efd92587f8

View Writeup ZIP pw:eip

[X_Refsource_Misc] https://github.com/ellanetworks/core/releases/tag/v1.7.0

Scores

CVSS v3 6.5

EPSS 0.0003

EPSS Percentile 9.1%

Attack Vector ADJACENT_NETWORK

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-476

Status published

Products (3)

ellanetworks/core 0 - 1.7.0Go

ellanetworks/core < 1.7.0

ellanetworks/ella_core < 1.7.0

Published Mar 27, 2026

Tracked Since Mar 29, 2026