CVE-2026-1522: Open5GS SGWC s5c-handler.c sgwc_s5c_handle_modify_bearer_response denial of service
A weakness has been identified in Open5GS up to 2.7.6. This vulnerability affects the function sgwcs5chandlemodifybearerresponse of the file src/sgwc/s5c-handler.c of the component SGWC. Executing a manipulation can lead to denial of service. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks. This patch is called b19cf6a. Applying a patch is advised to resolve this issue. The issue report is flagged as already-fixed.
Affected Software
Remediation
Patch Available
Patch Available
Event History
Frequently Asked Questions
What is the severity of CVE-2026-1522?
CVE-2026-1522 has been classified as a denial of service vulnerability.
How does CVE-2026-1522 affect Open5GS?
CVE-2026-1522 affects the sgwc_s5c_handle_modify_bearer_response function in the SGWC component of Open5GS versions up to 2.7.6.
How do I fix CVE-2026-1522?
To mitigate CVE-2026-1522, upgrade to the latest version of Open5GS beyond 2.7.6.
What systems are affected by CVE-2026-1522?
CVE-2026-1522 impacts any deployment of Open5GS versions up to 2.7.6.
What should I do if I cannot upgrade to fix CVE-2026-1522?
If unable to upgrade, consider implementing network layer protections to limit exposure from CVE-2026-1522.