CVE-2026-78156 PUBLISHED

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.

• WeiYi (VulDB User) reporter

• VDB-394539 | Open5GS S6a Authentication-Information-Request hss-s6a-path.c hss_ogs_diam_s6a_air_cb heap-based overflow
• VDB-394539 | CTI Indicators (IOB, IOC, IOA)
• CVE-2026-78156 | CVE Analysis and Report
• Submit #882951 | Open5GS 2.8.0 Heap Buffer Overflow
• https://github.com/open5gs/open5gs/issues/4661
• https://github.com/open5gs/open5gs/commit/a9c82ee0b590d76a581b0580cb46b598984e2392
• https://github.com/open5gs/open5gs/

• Heap-based Buffer Overflow CWE
• Memory Corruption CWE