{"id":"CVE-2026-26024","aliases":["EUVD-2026-7465","GHSA-mrv4-m9wc-c4g9"],"status":"published","title":"free5GC SMF crash (nil pointer dereference) on PFCP SessionReportRequest when ReportType.USAR=1 and UsageReport omits mandatory URRID sub-IE ","description":"free5GC SMF provides Session Management Function for free5GC, an open-source project for 5th generation (5G) mobile core networks. In versions up to and including 1.4.1, SMF panics and terminates when processing a malformed PFCP SessionReportRequest on the PFCP (UDP/8805) interface. No known upstream fix is available, but some workarounds are available. ACL/firewall the PFCP interface so only trusted UPF IPs can reach SMF (reduce spoofing/abuse surface); drop/inspect malformed PFCP SessionReportRequest messages at the network edge where feasible, and/or add recover() around PFCP handler dispatch to avoid whole-process termination (mitigation only).","severity":{"version":"4.0","score":6.6,"vector":"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/E:U","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00351,"percentile":0.29174,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-476"],"published":"2026-02-24T00:12:05Z","modified":"2026-10-28T02:30:56Z","products":[{"vendor":"free5gc","product":"smf"}],"references":[{"url":"https://github.com/free5gc/free5gc/security/advisories/GHSA-mrv4-m9wc-c4g9","tags":["x_refsource_CONFIRM","Vendor Advisory","advisory"]},{"url":"https://github.com/free5gc/free5gc/issues/807","tags":["x_refsource_MISC","Exploit","Issue Tracking","report"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26024.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26024","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-26024","title":"free5GC SMF crash (nil pointer dereference) on PFCP SessionReportRequest when ReportType.USAR=1 and UsageReport omits mandatory URRID sub-IE ","description":"free5GC SMF provides Session Management Function for free5GC, an open-source project for 5th generation (5G) mobile core networks. In versions up to and including 1.4.1, SMF panics and terminates when processing a malformed PFCP SessionReportRequest on the PFCP (UDP/8805) interface. No known upstream fix is available, but some workarounds are available. ACL/firewall the PFCP interface so only trusted UPF IPs can reach SMF (reduce spoofing/abuse surface); drop/inspect malformed PFCP SessionReportRequest messages at the network edge where feasible, and/or add recover() around PFCP handler dispatch to avoid whole-process termination (mitigation only).","status":"published","published":"2026-02-24T00:12:05.436Z","modified":"2026-02-26T14:30:03.495Z","cvss":[{"version":"4.0","score":6.6,"vector":"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/E:U","level":"medium","assessor":"cna"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T13:38:20.971157Z"}],"euvd":[{"id":"EUVD-2026-7465","description":"free5GC SMF provides Session Management Function for free5GC, an open-source project for 5th generation (5G) mobile core networks. In versions up to and including 1.4.1, SMF panics and terminates when processing a malformed PFCP SessionReportRequest on the PFCP (UDP/8805) interface. No known upstream fix is available, but some workarounds are available. ACL/firewall the PFCP interface so only trusted UPF IPs can reach SMF (reduce spoofing/abuse surface); drop/inspect malformed PFCP SessionReportRequest messages at the network edge where feasible, and/or add recover() around PFCP handler dispatch to avoid whole-process termination (mitigation only).","status":"published","published":"2026-02-24T00:12:05Z","modified":"2026-02-26T14:30:03Z","cvss":[{"version":"4.0","score":6.6,"vector":"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/E:U","level":"medium"}],"updated_at":"2026-11-02T19:48:28.012266Z"}],"nvd":[{"id":"CVE-2026-26024","description":"free5GC SMF provides Session Management Function for free5GC, an open-source project for 5th generation (5G) mobile core networks. In versions up to and including 1.4.1, SMF panics and terminates when processing a malformed PFCP SessionReportRequest on the PFCP (UDP/8805) interface. No known upstream fix is available, but some workarounds are available. ACL/firewall the PFCP interface so only trusted UPF IPs can reach SMF (reduce spoofing/abuse surface); drop/inspect malformed PFCP SessionReportRequest messages at the network edge where feasible, and/or add recover() around PFCP handler dispatch to avoid whole-process termination (mitigation only).","status":"published","published":"2026-02-24T01:16:15.087Z","modified":"2026-06-17T10:25:37.177Z","cvss":[{"version":"4.0","score":6.6,"vector":"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/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:12:06.63895Z"}],"osv":[{"id":"CVE-2026-26024","title":"free5GC SMF crash (nil pointer dereference) on PFCP SessionReportRequest when ReportType.USAR=1 and UsageReport omits mandatory URRID sub-IE ","description":"free5GC SMF provides Session Management Function for free5GC, an open-source project for 5th generation (5G) mobile core networks. In versions up to and including 1.4.1, SMF panics and terminates when processing a malformed PFCP SessionReportRequest on the PFCP (UDP/8805) interface. No known upstream fix is available, but some workarounds are available. ACL/firewall the PFCP interface so only trusted UPF IPs can reach SMF (reduce spoofing/abuse surface); drop/inspect malformed PFCP SessionReportRequest messages at the network edge where feasible, and/or add recover() around PFCP handler dispatch to avoid whole-process termination (mitigation only).","status":"published","published":"2026-02-24T00:12:05.436Z","modified":"2026-10-28T02:30:56.187908478Z","cvss":[{"version":"4.0","score":6.6,"vector":"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/E:U","level":"medium"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T15:44:59.80315Z"}]}}