CVE-2026-1736: Open5GS SGWC s11-handler.c assertion

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-02-02 · updated 2026-06-17
Weakness: CWE-617

Description

A security vulnerability has been detected in Open5GS up to 2.7.6. Impacted is the function sgwc_s11_handle_create_indirect_data_forwarding_tunnel_request of the file /src/sgwc/s11-handler.c of the component SGWC. Such manipulation leads to reachable assertion. The attack may be launched remotely. The exploit has been disclosed publicly and may be used. A patch should be applied to remediate this issue. The issue report is flagged as already-fixed.

Affected products

Open5GS: through 2.7.6

References

https://github.com/open5gs/open5gs/
https://github.com/open5gs/open5gs/issues/4270
https://github.com/open5gs/open5gs/issues/4270#event-21968624624
https://github.com/open5gs/open5gs/issues/4270#issue-3795141303
https://vuldb.com/?ctiid.343635
https://vuldb.com/?id.343635
https://vuldb.com/?submit.741191

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