CVE-2026-1736 Open5GS SGWC s11-handler.c assertion
Remote attackers can trigger a reachable assertion in Open5GS SGWC, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-1736?
CVE-2026-1736 is a medium-severity denial of service vulnerability in Open5gs Open5gs, published on 2 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-617
Which versions are affected by CVE-2026-1736?
It affects 1 product.
Products include Open5gs Open5gs.
How do I fix CVE-2026-1736?
No fix has been published for CVE-2026-1736 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-1736 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1736 exists.
Other vulnerabilities in Open5gs Open5gs
Sources
Also known as GHSA-77wj-4hgf-q3gq.