CVE-2026-7587: Open5GS AMF nsmf-handler.c amf_nsmf_pdusession_handle_update_sm_context 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: 2026-05-01 · updated 2026-06-17
Weakness: CWE-404

Description

A vulnerability has been found in Open5GS up to 2.7.7. This vulnerability affects the function amf_nsmf_pdusession_handle_update_sm_context of the file /src/amf/nsmf-handler.c of the component AMF. The manipulation leads to denial of service. It is possible to initiate the attack 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: through 2.7.7

References

https://github.com/open5gs/open5gs/
https://github.com/open5gs/open5gs/issues/4408
https://vuldb.com/submit/804339
https://vuldb.com/vuln/360540
https://vuldb.com/vuln/360540/cti

Get alerted when CVE-2026-7587 or the next vulnerability affects your stack