{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-33064",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-03-17T19:27:06.343Z",
        "datePublished": "2026-03-20T08:00:31.755Z",
        "dateUpdated": "2026-03-20T15:42:53.709Z"
    },
    "containers": {
        "cna": {
            "title": "free5GC UDM DataChangeNotification Procedure Panic Due to Nil Pointer Dereference",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-478",
                            "lang": "en",
                            "description": "CWE-478: Missing Default Case in Multiple Condition Expression",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "HIGH",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 8.7,
                        "baseSeverity": "HIGH",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/free5gc/free5gc/security/advisories/GHSA-7g27-v5wj-jr75",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/free5gc/free5gc/security/advisories/GHSA-7g27-v5wj-jr75"
                },
                {
                    "name": "https://github.com/free5gc/free5gc/issues/781",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/free5gc/free5gc/issues/781"
                },
                {
                    "name": "https://github.com/free5gc/udm/pull/78",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/free5gc/udm/pull/78"
                },
                {
                    "name": "https://github.com/free5gc/udm/commit/65d7070f4bfd016864cbbaefbd506bbc85d2fa92",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/free5gc/udm/commit/65d7070f4bfd016864cbbaefbd506bbc85d2fa92"
                }
            ],
            "affected": [
                {
                    "vendor": "free5gc",
                    "product": "free5gc",
                    "versions": [
                        {
                            "version": "< 1.4.2",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-03-20T08:00:31.755Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Free5GC is an open-source Linux Foundation project for 5th generation (5G) mobile core networks. Versions prior to 1.4.2 are vulnerable to procedure panic caused by Nil Pointer Dereference in the /sdm-subscriptions endpoint. A remote attacker can cause the UDM service to panic and crash by sending a crafted POST request to the /sdm-subscriptions endpoint with a malformed URL path containing path traversal sequences (../) and a large JSON payload. The DataChangeNotificationProcedure function in notifier.go attempts to access a nil pointer without proper validation, causing a complete service crash with \"runtime error: invalid memory address or nil pointer dereference\". Exploitation would result in UDM functionality disruption until recovery by restart. This issue has been fixed in version 1.4.2."
                }
            ],
            "source": {
                "advisory": "GHSA-7g27-v5wj-jr75",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-03-20T15:42:37.002784Z",
                                "id": "CVE-2026-33064",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-03-20T15:42:53.709Z"
                }
            }
        ]
    }
}