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CVE-2026-8743

Open5GS AMF/MME context.c ran_ue_find_by_amf_ue_ngap_id improper authorization

MEDIUM
6.3
CVSS Score
Published: May 17, 2026 at 09:00 AM UTC
Updated: October 21, 2026 at 09:17 AM UTC
1 product affected across 1 vendorOpen5GS

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Severity
MEDIUM6.3
Exploit prediction
EPSS 0.3%
SSVC
PoC

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (8)

VDB EntryTechnical DescriptionThird Party Advisory
Source: cverecord
https://vuldb.com/vuln/364330
SignaturePermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/vuln/364330/cti
Third Party AdvisoryVDB Entry
Source: cverecord
https://vuldb.com/submit/814559
ExploitIssue Tracking
Source: cverecord
https://github.com/open5gs/open5gs/issues/4498
Issue TrackingPatch
Source: cverecord
https://github.com/open5gs/open5gs/pull/4553
Patch
Source: cverecord
https://github.com/open5gs/open5gs/commit/5746b8576cfceec18ed87eb7d8cf11b1fb4cd8b1
Product
Source: cverecord
https://github.com/open5gs/open5gs/
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-8743

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.3MEDIUMVulDB
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-285CWE-266

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