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CVE-2026-90707

Open5GS Old AMF Discovery Fallback nnrf-handler.c amf_nnrf_try_old_amf_discovery_fallback use after free

CVSS 4.0 6.9 MEDIUMCVSS 3.1 8.3 HIGHCVSS 3.0 8.3 HIGHCVSS 2.0 7.5 Check source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-90707

Published

A security flaw has been discovered in Open5GS up to 2.7.x. Affected is the function amf_nnrf_try_old_amf_discovery_fallback of the file src/amf/nnrf-handler.c of the component Old AMF Discovery Fallback. The manipulation of the argument discovery_option results in use after free. The attack may be performed from remote. The patch is identified as ddd683a35f8aaac2b7b9884a24cd53bddfc65238. Applying a patch is advised to resolve this issue.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-90707

Published

Open5GS

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "n/a",
                    "product": "Open5GS",
                    "versions": [
                        {
                            "version": "2.0",
                            "status": "affected"
                        },
                        {
                            "version": "2.1",
                            "status": "affected"
                        },
                        {
                            "version": "2.2",
                            "status": "affected"
                        },
                        {
                            "version": "2.3",
                            "status": "affected"
                        },
                        {
                            "version": "2.4",
                            "status": "affected"
                        },
                        {
                            "version": "2.5",
                            "status": "affected"
                        },
                        {
                            "version": "2.6",
                            "status": "affected"
                        },
                        {
                            "version": "2.7",
                            "status": "affected"
                        }
                    ],
                    "cpes": [
                        "cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*"
                    ],
                    "modules": [
                        "Old AMF Discovery Fallback"
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON