A vulnerability labeled as critical has been found 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.

This vulnerability is cataloged as CVE-2025-15555. The attack may be launched remotely. There is no exploit available.

A patch should be applied to remediate this issue.