CVE-2026-8266 MEDIUM

CVE-2026-8266: Open5GS SMF gsm-build.c gsm_build_pdu_session_establishment_accept denial of service

Vendor N/A
Product Open5GS
Weakness CWE-404
Published May 11, 2026
Last update May 12, 2026
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

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

What the vulnerability does

01Description

A vulnerability was detected in Open5GS up to 2.7.7. This affects the function gsm_build_pdu_session_establishment_accept of the file /src/smf/gsm-build.c of the component SMF. The manipulation results in denial of service. The attack can be launched remotely. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Key dates

02Disclosure timeline

May 11, 2026 CVE published
May 12, 2026 Record updated