CVE-2026-78156
Open5GS S6a Authentication-Information-Request hss-s6a-path.c hss_ogs_diam_s6a_air_cb heap-based overflow
- State
- Published
- Severity
- 5.3 Medium
- Published
- Aug 23, 2026
- Updated
- Aug 26, 2026
- Reserved
- Aug 23, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P | VulDB |
| 3.1 | 7.4 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:P/RL:O/RC:C | VulDB |
| 3.0 | 7.4 High | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:P/RL:O/RC:C | VulDB |
| 2.0 | 6.5 Medium | AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
Open5GSn/a |
|
References
- VDB-394539 | Open5GS S6a Authentication-Information-Request hss-s6a-path.c hss_ogs_diam_s6a_air_cb heap-based overflowvdb-entrytechnical-description
- VDB-394539 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- CVE-2026-78156 | CVE Analysis and Reportthird-party-advisory
- Submit #882951 | Open5GS 2.8.0 Heap Buffer Overflowthird-party-advisory
- https://github.com/open5gs/open5gs/issues/4661issue-tracking
- https://github.com/open5gs/open5gs/commit/a9c82ee0b590d76a581b0580cb46b598984e2392patch
- https://github.com/open5gs/open5gs/product
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