CVE-2025-69252— free5GC has Null Pointer Dereference in UDM, Leading to Service Panic
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I. Basic Information for CVE-2025-69252
Vulnerability Information
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Vulnerability Title
free5GC has Null Pointer Dereference in UDM, Leading to Service Panic
Source: NVD (National Vulnerability Database)
Vulnerability Description
free5gc UDM provides Unified Data Management (UDM) for free5GC, an open-source project for 5th generation (5G) mobile core networks. Versions up to and including 1.4.1 have a NULL Pointer Dereference vulnerability. Remote unauthenticated attackers can trigger a service panic (Denial of Service) by sending a crafted PUT request with an unexpected ueId, crashing the UDM service. All deployments of free5GC using the UDM component may be affected. free5gc/udm pull request 76 contains a fix for the issue. No direct workaround is available at the application level. Applying the official patch is recommended.
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 1.4.1及之前版本存在代码问题漏洞，该漏洞源于存在空指针取消引用，可能导致远程未认证攻击者通过发送带有意外ueId的特制PUT请求触发服务恐慌，进而导致UDM服务崩溃。
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-2025-69252
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Same Patch Batch · free5gc · 2026-02-23 · 7 CVEs total
| CVE-2025-69208 | free5GC UDR's NEF incorrectly returns 500 for missing PFD data (UDR 404) in Nnef_PfdManage | |
| CVE-2025-69247 | free5GC has Heap Buffer Overflow in UPF Leading to Denial of Service | |
| CVE-2025-69248 | free5GC has Array Index Out of Bounds in AMF Leading to Denial of Service | |
| CVE-2025-69232 | free5GC hasProtocol Compliance Violation in UPF Leading to SMF Service Disruption | |
| CVE-2025-69250 | free5GC has Improper Error Handling in UDM, Leading to Information Exposure | |
| CVE-2025-69251 | free5GC has Improper Input Validation in UDM, Leading to Information Exposure |
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V. Comments for CVE-2025-69252
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