Vulnerability Description
A security vulnerability has been detected in Open5GS 2.8.0. Affected by this issue is the function hss_ogs_diam_s6a_air_cb of the file src/hss/hss-s6a-path.c of the component S6a Authentication-Information-Request Handler. Such manipulation of the argument Visited-PLMN-Id leads to heap-based buffer overflow. The attack may be performed from remote. The name of the patch is a9c82ee0b590d76a581b0580cb46b598984e2392. A patch should be applied to remediate this issue.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/open5gs/open5gs/
- https://github.com/open5gs/open5gs/commit/a9c82ee0b590d76a581b0580cb46b598984e23
- https://github.com/open5gs/open5gs/issues/4661
- https://vuldb.com/cve/CVE-2026-78156
- https://vuldb.com/submit/882951
- https://vuldb.com/vuln/394539
- https://vuldb.com/vuln/394539/cti
FAQ
What is CVE-2026-78156?
CVE-2026-78156 is a vulnerability with a CVSS score of 7.4 (HIGH). A security vulnerability has been detected in Open5GS 2.8.0. Affected by this issue is the function hss_ogs_diam_s6a_air_cb of the file src/hss/hss-s6a-path.c of the component S6a Authentication-Infor...
How severe is CVE-2026-78156?
CVE-2026-78156 has been rated HIGH with a CVSS base score of 7.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-78156?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.