Description
A vulnerability was found in Open5GS up to 2.7.6. This impacts the function ran_ue_find_by_amf_ue_ngap_id of the file src/amf/context.c of the component AMF/MME. Performing a manipulation results in improper authorization. It is possible to initiate the attack remotely. The exploit has been made public and could be used. The patch is named 5746b8576cfceec18ed87eb7d8cf11b1fb4cd8b1. It is suggested to install a patch to address this issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Open5GS | 2.7.0, 2.7.1, 2.7.2, 2.7.3, 2.7.4, 2.7.5, 2.7.6 | — |
References
- VDB-364330 | Open5GS AMF/MME context.c ran_ue_find_by_amf_ue_ngap_id improper authorization vdb-entry technical-description
- VDB-364330 | CTI Indicators (IOB, IOC, TTP, IOA) signature permissions-required
- CVE-2026-8743 | CVE Analysis and Report third-party-advisory
- Submit #814559 | Open5GS 2.7.6 Incorrect Authorization third-party-advisory
- https://github.com/open5gs/open5gs/issues/4498 exploit issue-tracking
- https://github.com/open5gs/open5gs/pull/4553 issue-tracking patch
- https://github.com/open5gs/open5gs/commit/5746b8576cfceec18ed87eb7d8cf11b1fb4cd8b1 patch
- https://github.com/open5gs/open5gs/ product