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CVE-2026-26025— free5GC SMF crash (nil pointer dereference) on PFCP SessionReportRequest when ReportType.USAR=1 and UsageReport omits mandatory URRID sub-IE 

EPSS 0.09% · P25
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I. Basic Information for CVE-2026-26025

Vulnerability Information
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Vulnerability Title
free5GC SMF crash (nil pointer dereference) on PFCP SessionReportRequest when ReportType.USAR=1 and UsageReport omits mandatory URRID sub-IE 
Source: NVD (National Vulnerability Database)
Vulnerability 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).
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
空指针解引用
Source: NVD (National Vulnerability Database)
Vulnerability Title
free5GC 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
free5GC是free5GC开源的一个第 5 代 (5G) 移动核心网络的开源项目。 free5GC SMF 1.4.1及之前版本存在代码问题漏洞，该漏洞源于处理畸形PFCP SessionReportRequest时发生内核崩溃，可能导致进程终止。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
free5gcsmf <= 1.4.1 -

II. Public POCs for CVE-2026-26025

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III. Intelligence Information for CVE-2026-26025

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Same Patch Batch · free5gc · 2026-02-24 · 6 CVEs total

CVE-2026-26024free5GC SMF crash (nil pointer dereference) on PFCP SessionReportRequest when ReportType.U
CVE-2026-25501free5GC SMF crash (nil pointer dereference) on PFCP SessionReportRequest when ReportType.D
CVE-2026-27642free5GC has Improper Input Validation in UDM UEAU Service
CVE-2026-27643free5GC has improper error handling in NEF with information exposure
CVE-2025-69253free5GC vulnerable to improper error handling in NEF with information exposure

IV. Related Vulnerabilities

Same product: smf
Same vendor: free5gc
Same weakness: CWE-476

V. Comments for CVE-2026-26025

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