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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.

PUBLISHED Reserved 2026-02-02 | Published 2026-02-04 | Updated 2026-02-23 | Assigner VulDB




MEDIUM: 6.9CVSS: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
HIGH: 7.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C
HIGH: 7.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C
7.5AV:N/AC:L/Au:N/C:P/I:P/A:P/E:ND/RL:OF/RC:C

Problem types

Stack-based Buffer Overflow

Memory Corruption

Timeline

2026-02-02:Advisory disclosed
2026-02-02:VulDB entry created
2026-02-12:VulDB entry last update

Credits

jungnickel (VulDB User) reporter

References

github.com/open5gs/open5gs/issues/4177 exploit

vuldb.com/?id.343795 (VDB-343795 | Open5GS VoLTE Cx-Test hss-cx-path.c hss_ogs_diam_cx_mar_cb stack-based overflow) vdb-entry technical-description

vuldb.com/?ctiid.343795 (VDB-343795 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.741901 (Submit #741901 | Open5GS v2.7.6 Buffer Over-read) third-party-advisory

github.com/open5gs/open5gs/issues/4177 issue-tracking

github.com/open5gs/open5gs/issues/4177 issue-tracking

github.com/...ommit/54dda041211098730221d0ae20a2f9f9173e7a21 patch

github.com/open5gs/open5gs/ product

cve.org (CVE-2025-15555)

nvd.nist.gov (CVE-2025-15555)

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