{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-33064", "tracking": { "current_release_date": "2026-03-25T18:14:02.646321Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-33064", "initial_release_date": "2026-03-18T20:44:19.926219Z", "revision_history": [ { "date": "2026-03-18T20:44:19.926219Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (5).| CWES updated (1)." }, { "date": "2026-03-18T20:44:27.836985Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-19T11:39:58.102026Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (5).| CWES updated (1)." }, { "date": "2026-03-20T18:27:40.635485Z", "number": "4", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (1).| References created (4).| CWES updated (1)." }, { "date": "2026-03-20T18:27:45.343422Z", "number": "5", "summary": "NCSC Score updated." }, { "date": "2026-03-20T18:28:44.707796Z", "number": "6", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (4).| CWES updated (1)." }, { "date": "2026-03-20T18:28:47.632315Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-03-20T18:35:43.568535Z", "number": "8", "summary": "Unknown change." }, { "date": "2026-03-20T21:41:25.564274Z", "number": "9", "summary": "References created (1).| CWES updated (1)." }, { "date": "2026-03-20T21:59:04.847406Z", "number": "10", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-20T21:59:09.816506Z", "number": "11", "summary": "NCSC Score updated." }, { "date": "2026-03-24T13:47:30.373911Z", "number": "12", "summary": "CVSS created.| Products connected (1).| Product Identifiers created (1).| Exploits created (1).| CWES updated (1)." }, { "date": "2026-03-24T13:47:34.041341Z", "number": "13", "summary": "NCSC Score updated." }, { "date": "2026-03-25T18:13:38.524971Z", "number": "14", "summary": "Source created.| CVE status created. (valid)| Description created for source.| References created (5)." }, { "date": "2026-03-25T18:13:40.107633Z", "number": "15", "summary": "NCSC Score updated." }, { "date": "2026-03-25T18:13:44.298274Z", "number": "16", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (1).| References created (5).| CWES updated (1)." }, { "date": "2026-03-25T18:13:45.993134Z", "number": "17", "summary": "NCSC Score updated." } ], "status": "interim", "version": "17" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<1.4.2", "product": { "name": "vers:unknown/<1.4.2", "product_id": "CSAFPID-5874539" } } ], "category": "product_name", "name": "Free5gc" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<1.4.2", "product": { "name": "vers:unknown/<1.4.2", "product_id": "CSAFPID-5897414", "product_identification_helper": { "cpe": "cpe:2.3:a:free5gc:udm:*:*:*:*:*:go:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=0|<1.4.2", "product": { "name": "vers:unknown/>=0|<1.4.2", "product_id": "CSAFPID-5907216" } } ], "category": "product_name", "name": "udm" } ], "category": "vendor", "name": "free5GC" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-33064", "cwe": { "id": "CWE-476", "name": "NULL Pointer Dereference" }, "notes": [ { "category": "description", "text": "**Impact** \nThis is a NULL Pointer Dereference vulnerability leading to Denial of Service. \n- **Security Impact**: 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\". \n- **Functional Impact**: The service crashes completely, requiring manual restart. All UDM functionality is disrupted until recovery. \n- **Affected Parties**: All deployments of free5GC v4.0.1 using the UDM HTTP callback functionality.\n\n**Patches** \nYes, the issue has been patched. \nThe fix is implemented in PR free5gc/udm#78. \nUsers should upgrade to the next release of free5GC that includes this commit.\n\n**Workarounds** \nThere is no direct workaround at the application level. The recommendation is to apply the provided patch or implement API gateway-level filtering to block requests containing path traversal sequences.", "title": "github - https://github.com/advisories/GHSA-7g27-v5wj-jr75" }, { "category": "description", "text": "**Impact** \nThis is a NULL Pointer Dereference vulnerability leading to Denial of Service. \n- **Security Impact**: 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\". \n- **Functional Impact**: The service crashes completely, requiring manual restart. All UDM functionality is disrupted until recovery. \n- **Affected Parties**: All deployments of free5GC v4.0.1 using the UDM HTTP callback functionality.\n\n**Patches** \nYes, the issue has been patched. \nThe fix is implemented in PR free5gc/udm#78. \nUsers should upgrade to the next release of free5GC that includes this commit.\n\n**Workarounds** \nThere is no direct workaround at the application level. The recommendation is to apply the provided patch or implement API gateway-level filtering to block requests containing path traversal sequences.", "title": "github - https://api.github.com/advisories/GHSA-7g27-v5wj-jr75" }, { "category": "description", "text": "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.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33064.json" }, { "category": "description", "text": "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.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33064" }, { "category": "description", "text": "free5GC UDM DataChangeNotification Procedure Panic Due to Nil Pointer Dereference in github.com/free5gc/udm", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGO-2026-4757.json?alt=media" }, { "category": "description", "text": "**Impact** \nThis is a NULL Pointer Dereference vulnerability leading to Denial of Service. \n- **Security Impact**: 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\". \n- **Functional Impact**: The service crashes completely, requiring manual restart. All UDM functionality is disrupted until recovery. \n- **Affected Parties**: All deployments of free5GC v4.0.1 using the UDM HTTP callback functionality.\n\n**Patches** \nYes, the issue has been patched. \nThe fix is implemented in PR free5gc/udm#78. \nUsers should upgrade to the next release of free5GC that includes this commit.\n\n**Workarounds** \nThere is no direct workaround at the application level. The recommendation is to apply the provided patch or implement API gateway-level filtering to block requests containing path traversal sequences.", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGHSA-7g27-v5wj-jr75.json?alt=media" }, { "category": "other", "text": "0.00201", "title": "EPSS" }, { "category": "other", "text": "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", "title": "CVSSV4" }, { "category": "other", "text": "8.7", "title": "CVSSV4 base score" }, { "category": "other", "text": "3.8", "title": "NCSC Score" }, { "category": "other", "text": "Is related to CWE-476 (NULL Pointer Dereference)", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "Is related to (a version of) an uncommon product, The value of the most recent CVSS (V3) score, There is exploit data available from source Nvd", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-5874539", "CSAFPID-5897414", "CSAFPID-5907216" ] }, "references": [ { "category": "external", "summary": "Source - github", "url": "https://github.com/advisories/GHSA-7g27-v5wj-jr75" }, { "category": "external", "summary": "Source raw - github", "url": "https://api.github.com/advisories/GHSA-7g27-v5wj-jr75" }, { "category": "external", "summary": "Source - github", "url": "https://api.github.com/advisories/GHSA-7g27-v5wj-jr75" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33064.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33064" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGO-2026-4757.json?alt=media" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGHSA-7g27-v5wj-jr75.json?alt=media" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv", "url": "https://github.com/free5gc/free5gc/security/advisories/GHSA-7g27-v5wj-jr75" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv", "url": "https://github.com/free5gc/free5gc/issues/781" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv", "url": "https://github.com/free5gc/udm/pull/78" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv", "url": "https://github.com/free5gc/udm/commit/65d7070f4bfd016864cbbaefbd506bbc85d2fa92" }, { "category": "external", "summary": "Reference - github", "url": "https://github.com/advisories/GHSA-7g27-v5wj-jr75" }, { "category": "external", "summary": "Reference - github; osv", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33064" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH" }, "products": [ "CSAFPID-5874539", "CSAFPID-5897414", "CSAFPID-5907216" ] } ], "title": "CVE-2026-33064" } ] }