CVE-2026-2522: OPEN5GS

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

A security vulnerability has been detected in Open5GS up to 2.7.6. Impacted is an unknown function of the file /src/mme/esm-build.c of the component MME. The manipulation leads to memory corruption. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Affected products

• OPEN5GS OPEN5GS: up to and including 2.7.6

Published 2026-02-16. Last modified 2026-06-17.