CVE-2025-15555: OPEN5GS

High severity, CVSS 8.2. EPSS: 0.6% chance of exploitation in the next 30 days.

A security flaw has been discovered in Open5GS up to 2.7.6. Affected by this vulnerability is the function hss_ogs_diam_cx_mar_cb of the file src/hss/hss-cx-path.c of the component VoLTE Cx-Test. The manipulation of the argument OGS_KEY_LEN results in stack-based buffer overflow. The attack may be launched remotely. The patch is identified as 54dda041211098730221d0ae20a2f9f9173e7a21. A patch should be applied to remediate this issue.

Affected products

• OPEN5GS OPEN5GS: up to and including 2.7.6

Published 2026-02-04. Last modified 2026-06-17.