CVE-2026-78156 (GCVE-0-2026-78156)
Vulnerability from cvelistv5 – Published: 2026-08-23 23:45 – Updated: 2026-08-26 18:08 X_Open Source
VLAI
EPSS
VEX
Title
Open5GS S6a Authentication-Information-Request hss-s6a-path.c hss_ogs_diam_s6a_air_cb heap-based overflow
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 18:08 UTC
Assigner
VulDB
CNA
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/394539 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/394539/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-78156 | third-party-advisory |
| https://vuldb.com/submit/882951 | third-party-advisory |
| https://github.com/open5gs/open5gs/issues/4661 | issue-tracking |
| https://github.com/open5gs/open5gs/commit/a9c82ee… | patch |
| https://github.com/open5gs/open5gs/ | product |
Impacted products
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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