CVE-2026-7706: Open5GS AMF gmm-handler.c gmm_handle_service_request denial of service

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-03 · updated 2026-06-17
Weakness: CWE-404

Description

A vulnerability has been found in Open5GS up to 2.7.7. This issue affects the function gmm_handle_service_request of the file /src/amf/gmm-handler.c of the component AMF. The manipulation leads to denial of service. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Affected products

Open5GS: 2.7.0, 2.7.1, 2.7.2, 2.7.3, 2.7.4, 2.7.5 (+2)

References

https://github.com/open5gs/open5gs/
https://github.com/open5gs/open5gs/issues/4409
https://vuldb.com/submit/805698
https://vuldb.com/vuln/360882
https://vuldb.com/vuln/360882/cti

Get alerted when CVE-2026-7706 or the next vulnerability affects your stack