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.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/open5gs/open5gs/commit/5746b8576cfceec18ed87eb7d8cf11b1fb4cd8b1 Patch
- https://github.com/open5gs/open5gs/pull/4553 Issue Tracking, Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 2.1 · open5gsNVD modified 2026-10-21 09:17
Affected (CPE criteria) 1
cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*
References 8
- https://github.com/open5gs/open5gs/ Product
- https://github.com/open5gs/open5gs/commit/5746b8576cfceec18ed87eb7d8cf11b1fb4cd8b1 Patch
- https://github.com/open5gs/open5gs/issues/4498 Exploit, Issue Tracking
- https://github.com/open5gs/open5gs/pull/4553 Issue Tracking, Patch
- https://vuldb.com/cve/CVE-2026-8743
- https://vuldb.com/submit/814559 Third Party Advisory, VDB Entry
- https://vuldb.com/vuln/364330 Third Party Advisory, VDB Entry
- https://vuldb.com/vuln/364330/cti Permissions Required, VDB Entry