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CVE-2026-14618— Open5GS AMF nnrf-handler.c amf_nnrf_handle_nf_discover denial of service

Quick assessment

Affected
n/a Open5GS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Open5GS是Open5GS组织开源的一个 5G Core 和 Epc 的 C 语言开源实现,即 Lte/Nr 网络的核心网络。 Open5GS 2.7.7及之前版本存在资源管理错误漏洞，该漏洞源于AMF组件中src/amf/nnrf-handler.c文件的amf_nnrf_handle_nf_discover函数问题，可能导致拒绝服务。

CVSS 4.3 · Medium EPSS 0.55% · P44

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 8

VendorProduct Version RangeStatus
n/a Open5GS 2.7.0 affected
2.7.1 affected
2.7.2 affected
2.7.3 affected
2.7.4 affected
2.7.5 affected
2.7.6 affected
2.7.7 affected
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I. Basic Information for CVE-2026-14618

Vulnerability Information
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Vulnerability Title
Open5GS AMF nnrf-handler.c amf_nnrf_handle_nf_discover denial of service
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was detected in Open5GS up to 2.7.7. Affected by this vulnerability is the function amf_nnrf_handle_nf_discover of the file src/amf/nnrf-handler.c of the component AMF. The manipulation results in denial of service. The attack may be launched remotely. The exploit is now public and may be used. The patch is identified as fb5f67703de0213fb9c6e6ef3b48b6c1707e9503. It is best practice to apply a patch to resolve this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
不恰当的资源关闭或释放
Source: CVE Program / CVE List V5
Vulnerability Title
open5gs 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Open5GS是Open5GS组织开源的一个 5G Core 和 Epc 的 C 语言开源实现,即 Lte/Nr 网络的核心网络。 Open5GS 2.7.7及之前版本存在资源管理错误漏洞，该漏洞源于AMF组件中src/amf/nnrf-handler.c文件的amf_nnrf_handle_nf_discover函数问题，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

Vendor Product Affected Versions CPE Subscribe
- Open5GS 2.7.0 cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-14618

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III. Intelligence Information for CVE-2026-14618

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Patches & Fixes for CVE-2026-14618 (2)

Other References for CVE-2026-14618 (1)

Same Patch Batch · n/a · 2026-07-04 · 6 CVEs total

CVE-2026-14647 4.3 MEDIUM onnx onnxruntime old.cc convPoolShapeInference_opset19 out-of-bounds
CVE-2026-14629 4.3 MEDIUM RT-Thread Parameter lwp_syscall.c sys_ioctl divide by zero
CVE-2026-14685 3.3 LOW HdrHistogram AbstractHistogram AbstractHistogram.java recordValueWithCount state issue
CVE-2026-14684 3.3 LOW HdrHistogram AbstractHistogram.java memory allocation
CVE-2026-14683 3.3 LOW HdrHistogram AbstractHistogram.java memory allocation

IV. Related Vulnerabilities

Same product: Open5GS
Same vendor: n/a
Same weakness: CWE-404

V. Comments for CVE-2026-14618

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