CVE-2026-1682— Free5GC SMF PFCP UDP Endpoint handler.go HandlePfcpAssociationReleaseRequest null pointer dereference
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I. Basic Information for CVE-2026-1682
Vulnerability Information
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Vulnerability Title
Free5GC SMF PFCP UDP Endpoint handler.go HandlePfcpAssociationReleaseRequest null pointer dereference
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw has been found in Free5GC SMF up to 4.1.0. Affected is the function HandlePfcpAssociationReleaseRequest of the file internal/pfcp/handler/handler.go of the component PFCP UDP Endpoint. Executing a manipulation can lead to null pointer dereference. The attack may be launched remotely. The exploit has been published and may be used. A patch should be applied to remediate 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
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 4.1.0及之前版本存在代码问题漏洞，该漏洞源于PFCP UDP Endpoint组件中internal/pfcp/handler/handler.go文件的HandlePfcpAssociationReleaseRequest函数存在空指针取消引用，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-2026-1682
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- Submit #739508: free5gc SMF v4.1.0 Denial of Servicethird-party-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-1682
Same Patch Batch · Free5GC · 2026-01-30 · 3 CVEs total
| CVE-2026-1683 | 5.3 MEDIUM | Free5GC SMF PFCP handler.go HandlePfcpSessionReportRequest denial of service |
| CVE-2026-1684 | 5.3 MEDIUM | Free5GC SMF PFCP UDP Endpoint pfcp_reports.go HandleReports 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-2026-1684
Free5GC SMF PFCP UDP Endpoint pfcp_reports.go HandleReports - CVE-2026-1683
Free5GC SMF PFCP handler.go HandlePfcpSessionReportRequest d
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