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CVE-2026-8743— Open5GS AMF/MME context.c ran_ue_find_by_amf_ue_ngap_id improper authorization

CVSS 6.3 · Medium EPSS 0.04% · P12

Affected Version Matrix 7

VendorProductVersion RangeStatus
n/aOpen5GS2.7.0affected
2.7.1affected
2.7.2affected
2.7.3affected
2.7.4affected
2.7.5affected
2.7.6affected
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I. Basic Information for CVE-2026-8743

Vulnerability Information
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Vulnerability Title
Open5GS AMF/MME context.c ran_ue_find_by_amf_ue_ngap_id improper authorization
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was found in Open5GS up to 2.7.6. This impacts the function ran_ue_find_by_amf_ue_ngap_id of the file src/amf/context.c of the component AMF/MME. Performing a manipulation results in improper authorization. It is possible to initiate the attack remotely. The exploit has been made public and could be used. The patch is named 5746b8576cfceec18ed87eb7d8cf11b1fb4cd8b1. It is suggested to install a patch to address this issue.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制不恰当
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 2.7.6及之前版本存在安全漏洞，该漏洞源于AMF/MME组件中context.c文件的ran_ue_find_by_amf_ue_ngap_id函数存在授权不当。攻击者可能远程利用此漏洞。
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

VendorProductAffected VersionsCPESubscribe
-Open5GS 2.7.0 cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-8743

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III. Intelligence Information for CVE-2026-8743

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Advisory · 1

Same Patch Batch · n/a · 2026-05-17 · 11 CVEs total

CVE-2026-87476.3 MEDIUMZ-BlogPHP Commend Approval c_system_event.php CheckComment improper authorization
CVE-2026-87244.7 MEDIUMDataease Data Dashboard SqlparserUtils.java SqlparserUtils.transFilter sql injection
CVE-2026-87464.3 MEDIUMOpen5GS NRF nghttp2-server.c discover_handler use after free
CVE-2026-87454.3 MEDIUMOpen5GS AUSF nausf-handler.c ogs_timer_add denial of service
CVE-2026-87444.3 MEDIUMOpen5GS NRF context.c ogs_sbi_nf_service_add denial of service
CVE-2026-87314.3 MEDIUMOpen5GS NRF client.c ogs_sbi_client_add denial of service
CVE-2026-87304.3 MEDIUMOpen5GS NRF context.c ogs_sbi_nf_instance_set_id denial of service
CVE-2026-87294.3 MEDIUMOpen5GS NRF message.c denial of service
CVE-2026-87284.3 MEDIUMOpen5GS NRF conv.c ogs_sbi_discovery_option_parse_plmn_list denial of service
CVE-2026-87413.1 LOWEMQX QoS 2 PUBLISH Packet emqx_persistent_session_ds.erl race condition

IV. Related Vulnerabilities

Same product: Open5GS
Same vendor: n/a
Same weakness: CWE-285

V. Comments for CVE-2026-8743

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