CVE-2026-1684— Free5GC SMF PFCP UDP Endpoint pfcp_reports.go HandleReports denial of service
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I. Basic Information for CVE-2026-1684
Vulnerability Information
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Vulnerability Title
Free5GC SMF PFCP UDP Endpoint pfcp_reports.go HandleReports denial of service
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was found in Free5GC SMF up to 4.1.0. Affected by this issue is the function HandleReports of the file /internal/context/pfcp_reports.go of the component PFCP UDP Endpoint. The manipulation results in denial of service. The attack can be executed remotely. It is advisable to implement a patch to correct this issue.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
不恰当的资源关闭或释放
Source: NVD (National Vulnerability Database)
Vulnerability Title
free5GC 安全漏洞
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 4.1.0及之前版本存在安全漏洞，该漏洞源于PFCP UDP Endpoint组件中/internal/context/pfcp_reports.go文件的HandleReports函数存在操作不当，可能导致拒绝服务。
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
II. Public POCs for CVE-2026-1684
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- Submit #739655: free5gc SMF v4.1.0 Denial of Servicethird-party-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-1684
Same Patch Batch · Free5GC · 2026-01-30 · 3 CVEs total
| CVE-2026-1682 | 5.3 MEDIUM | Free5GC SMF PFCP UDP Endpoint handler.go HandlePfcpAssociationReleaseRequest null pointer |
| CVE-2026-1683 | 5.3 MEDIUM | Free5GC SMF PFCP handler.go HandlePfcpSessionReportRequest denial of service |
IV. Related Vulnerabilities
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- CVE-2026-26025
free5GC SMF crash (nil pointer dereference) on PFCP SessionR - CVE-2026-26024
free5GC SMF crash (nil pointer dereference) on PFCP SessionR - CVE-2026-25501
free5GC SMF crash (nil pointer dereference) on PFCP SessionR - CVE-2026-1683
Free5GC SMF PFCP handler.go HandlePfcpSessionReportRequest d - CVE-2026-1682
Free5GC SMF PFCP UDP Endpoint handler.go HandlePfcpAssociati
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Same weakness: CWE-404
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V. Comments for CVE-2026-1684
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