{"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"}}]}}