CVE-2025-15555

Open5GS VoLTE Cx-Test hss-cx-path.c hss_ogs_diam_cx_mar_cb stack-based overflow

State: Published
Severity: 6.9 Medium
Published: Feb 4, 2026
Updated: Apr 7, 2026
Reserved: Feb 2, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X	VulDB
3.1	7.3 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C	VulDB
3.0	7.3 High	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C	VulDB
2.0	7.5 High	AV:N/AC:L/Au:N/C:P/I:P/A:P/E:ND/RL:OF/RC:C	VulDB

Weaknesses

CWE-121 Stack-based Buffer Overflow
CWE-119 Memory Corruption

Affected Products

Product	Versions
Open5GSn/a	2.7.0Affected 2.7.1Affected 2.7.2Affected 2.7.3Affected 2.7.4Affected 2.7.5Affected 2.7.6Affected

References

VDB-343795 | Open5GS VoLTE Cx-Test hss-cx-path.c hss_ogs_diam_cx_mar_cb stack-based overflowvdb-entrytechnical-description
VDB-343795 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
Submit #741901 | Open5GS v2.7.6 Buffer Over-readthird-party-advisory
https://github.com/open5gs/open5gs/issues/4177issue-tracking
https://github.com/open5gs/open5gs/issues/4177#event-21256395700issue-tracking
https://github.com/open5gs/open5gs/commit/54dda041211098730221d0ae20a2f9f9173e7a21patch
https://github.com/open5gs/open5gs/product

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