CVE-2026-7707— Open5GS UDR nudr-handler.c udr_nudr_dr_handle_subscription_context denial of service
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I. Basic Information for CVE-2026-7707
Vulnerability Information
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Vulnerability Title
Open5GS UDR nudr-handler.c udr_nudr_dr_handle_subscription_context denial of service
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was found in Open5GS up to 2.7.7. Impacted is the function udr_nudr_dr_handle_subscription_context of the file /src/udr/nudr-handler.c of the component UDR. The manipulation of the argument pei results in denial of service. The attack can be launched remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/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
Open5GS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Open5GS是Open5GS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及之前版本存在安全漏洞，该漏洞源于组件UDR中文件/src/udr/nudr-handler.c的函数udr_nudr_dr_handle_subscription_context对参数pei的操作，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-2026-7707
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · n/a · 2026-05-03 · 6 CVEs total
| CVE-2026-7711 | 7.3 HIGH | MindsDB Engine proc_wrapper.py exec unrestricted upload |
| CVE-2026-7712 | 6.3 MEDIUM | MindsDB Pickle pickle.loads deserialization |
| CVE-2026-7673 | 4.7 MEDIUM | crmeb_java Admin Upload UploadServiceImpl.java unrestricted upload |
| CVE-2026-7708 | 4.3 MEDIUM | Open5GS UDR subscription.c ogs_dbi_subscription_data denial of service |
| CVE-2026-7706 | 4.3 MEDIUM | Open5GS AMF gmm-handler.c gmm_handle_service_request denial of service |
IV. Related Vulnerabilities
Same product: Open5GS
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Open5GS SMF smf_nsmf_handle_created_data_in_vsmf denial of s - CVE-2026-8266
Open5GS SMF gsm-build.c gsm_build_pdu_session_establishment_
Same vendor: n/a
- CVE-2026-8276
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bettercap zerogod IPP Service zerogod_ipp_primitives.go ippR - CVE-2026-8270
Open5GS SMF ogs_nas_parse_qos_rules denial of service - CVE-2026-8269
Open5GS SMF smf_nsmf_handle_create_sm_context denial of serv - CVE-2026-8268
Open5GS SMF OpenAPI_list_create denial of service
Same weakness: CWE-404
- CVE-2026-8270
Open5GS SMF ogs_nas_parse_qos_rules denial of service - CVE-2026-8269
Open5GS SMF smf_nsmf_handle_create_sm_context denial of serv - CVE-2026-8268
Open5GS SMF OpenAPI_list_create denial of service - CVE-2026-8267
Open5GS SMF smf_nsmf_handle_created_data_in_vsmf denial of s - CVE-2026-8266
Open5GS SMF gsm-build.c gsm_build_pdu_session_establishment_
V. Comments for CVE-2026-7707
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