CVE-2026-7601

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Source
https://cve.org/CVERecord?id=CVE-2026-7601
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-7601.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-7601
Published
2026-05-02T02:00:17Z
Modified
2026-08-12T16:09:20Z
Severity
  • 5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X CVSS Calculator
Summary
Open5GS AMF gmm-handler.c denial of service
Details

A vulnerability has been found in Open5GS up to 2.7.6. Affected is an unknown function of the file src/amf/gmm-handler.c of the component AMF. The manipulation of the argument reg_type leads to denial of service. The attack is possible to be carried out remotely. Upgrading to version 2.7.7 is able to address this issue. The identifier of the patch is ebc66942b6f8f1fab2d640e71cf4e9f1a423b426. It is advisable to upgrade the affected component.

Database specific 
{
    "cna_assigner": "VulDB",
    "cwe_ids": [
        "CWE-404"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/7xxx/CVE-2026-7601.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "2.7.3"
                },
                {
                    "last_affected": "2.7.3"
                },
                {
                    "introduced": "2.7.4"
                },
                {
                    "last_affected": "2.7.4"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}
References

Affected packages

Git / github.com/open5gs/open5gs

Affected ranges

Type
GIT
Repo
https://github.com/open5gs/open5gs
Events
Introduced
83e35bb2de7e67646fdba849580184422b10006a
Fixed
ebc66942b6f8f1fab2d640e71cf4e9f1a423b426
Fixed
318eeb49a7dcdff733dec60e02d9c60aefca2fb9
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "2.7.0"
        },
        {
            "last_affected": "2.7.0"
        },
        {
            "introduced": "2.7.1"
        },
        {
            "last_affected": "2.7.1"
        },
        {
            "introduced": "2.7.2"
        },
        {
            "last_affected": "2.7.2"
        },
        {
            "introduced": "2.7.5"
        },
        {
            "last_affected": "2.7.5"
        },
        {
            "introduced": "2.7.6"
        },
        {
            "last_affected": "2.7.6"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

2.*
2.7.0
2.7.1
2.7.2
2.7.5
2.7.6
v2.*
v2.7.0
v2.7.1
v2.7.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-7601.json"
vanir_signatures 
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        "deprecated": false,
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            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-7601-6527a828",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/open5gs/open5gs/commit/ebc66942b6f8f1fab2d640e71cf4e9f1a423b426",
        "target": {
            "file": "src/amf/gmm-handler.c"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "172102098920687939762285197458711856339",
            "length": 883
        },
        "id": "CVE-2026-7601-855ac560",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/open5gs/open5gs/commit/ebc66942b6f8f1fab2d640e71cf4e9f1a423b426",
        "target": {
            "file": "src/amf/namf-build.c",
            "function": "amf_namf_comm_build_ue_context_transfer"
        }
    },
    {
        "deprecated": false,
        "digest": {
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            "length": 6536
        },
        "id": "CVE-2026-7601-a4b9e70d",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/open5gs/open5gs/commit/ebc66942b6f8f1fab2d640e71cf4e9f1a423b426",
        "target": {
            "file": "src/amf/gmm-handler.c",
            "function": "gmm_handle_registration_request"
        }
    },
    {
        "deprecated": false,
        "digest": {
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                "312126629065195888280000466724166328307"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-7601-b6309caa",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/open5gs/open5gs/commit/ebc66942b6f8f1fab2d640e71cf4e9f1a423b426",
        "target": {
            "file": "src/amf/namf-build.c"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "179354079607305342630428483608618152725",
            "length": 1650
        },
        "id": "CVE-2026-7601-cb63a961",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/open5gs/open5gs/commit/ebc66942b6f8f1fab2d640e71cf4e9f1a423b426",
        "target": {
            "file": "src/amf/gmm-handler.c",
            "function": "gmm_registration_request_from_old_amf"
        }
    }
]
vanir_signatures_modified 
"2026-08-12T16:09:20Z"