Stack-based Buffer Overflow in Open5GS VoLTE Cx-Test
CVE-2025-15555

6.9MEDIUM

Key Information:

Vendor

Open5GS

Status
Open5gs
Vendor
CVE Published:
4 February 2026

What is CVE-2025-15555?

A security flaw has been identified in Open5GS within the VoLTE Cx-Test component. The vulnerability arises from the hss_ogs_diam_cx_mar_cb function located in the src/hss/hss-cx-path.c file. It is caused by an improper handling of the OGS_KEY_LEN argument, leading to a stack-based buffer overflow. This issue allows attackers to exploit the vulnerability remotely, potentially compromising the system's integrity. To mitigate the risk, users are advised to apply the provided patch (54dda041211098730221d0ae20a2f9f9173e7a21) immediately.

Affected Version(s)

Open5GS 2.7.0

Open5GS 2.7.1

Open5GS 2.7.2

References

https://vuldb.com/vuln/343795
vdb-entrytechnical-description
https://vuldb.com/vuln/343795/cti
signaturepermissions-required
https://vuldb.com/submit/741901
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

jungnickel (VulDB User)
.