CVE-2025-15555

High

Description

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.

SeverityHigh

CVSS7.3

Exploit probability—

ProductOpen5gs

PublishedFeb 4, 2026

First seenFeb 4, 2026

Weakness typeCWE-121CWE-121 CWE-119Memory buffer bounds error

How to fix

Patches

github.com/open5gs/open5gs/commit/54dda041211098730221d0ae20a2f9f9173e7a21

Affected products

Product	Affected versions	Fixed in
open5gs open5gs	v ≤ 2.7.6	—

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