CVE-2026-7535
Open5GS transfer-update denial of service
Vexday Risk Score
33Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
CVSS 5.3EPSS 0.3%KEV nãoPoC públicaNuclei —Metasploit —Patch —
Lifecycle
01 May 2026Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
A vulnerability was found in Open5GS up to 2.7.7. This affects the function amf_namf_comm_handle_registration_status_update_request in the library /lib/app/ogs-init.c of the file /namf-comm/v1/ue-contexts/{ueContextId}/transfer-update. Performing a manipulation of the argument ueContextId results in denial of service. The attack can be initiated 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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
n/a · Open5GSpublic PoCs found — 1
cve_referencegithub.com/open5gs/open5gs/issues/4399unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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