CVE-2025-69248— free5GC has Array Index Out of Bounds in AMF Leading to Denial of Service
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I. Basic Information for CVE-2025-69248
Vulnerability Information
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Vulnerability Title
free5GC has Array Index Out of Bounds in AMF Leading to Denial of Service
Source: NVD (National Vulnerability Database)
Vulnerability Description
free5GC is an open-source project for 5th generation (5G) mobile core networks. Versions up to and including 1.4.1 of free5GC's AMF service have a Buffer Overflow vulnerability leading to Denial of Service. Remote unauthenticated attackers can crash the AMF service by sending a specially crafted NAS Registration Request with a malformed 5GS Mobile Identity, causing complete denial of service for the 5G core network. All deployments of free5GC using the AMF component may be affected. Pull request 43 of the free5gc/nas repo contains a fix. 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
对数组索引的验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
free5GC 输入验证错误漏洞
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及之前版本存在输入验证错误漏洞，该漏洞源于缓冲区溢出，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-2025-69248
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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-2025-69232 | 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 | |
| CVE-2025-69252 | free5GC has Null Pointer Dereference in UDM, Leading to Service Panic |
IV. Related Vulnerabilities
Same vendor: free5gc
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free5GC UDR: Fail-open handling in PolicyDataSubsToNotifyPos - CVE-2026-40249
free5gc UDR fail-open request handling in PolicyDataSubsToNo - CVE-2026-40248
free5gc UDR improper path validation allows unauthenticated
Same weakness: CWE-129
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