CVE-2026-1586 Open5GS SGWC s11-handler.c ogs_gtp2_f_teid_to_ip denial of service
Remote attackers can cause a denial of service in Open5GS SGWC by exploiting a flaw in the s11-handler, requiring a patch for mitigation.
- 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-2026-1586?
CVE-2026-1586 is a medium-severity denial of service vulnerability in Open5gs Open5gs, published on 29 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw has been found in Open5GS up to 2.7.5. Impacted is the function ogs_gtp2_f_teid_to_ip of the file /sgwc/s11-handler.c of the component SGWC. Executing a manipulation can lead to denial of service. The attack may be performed from remote. The exploit has been published and may be used. It is advisable to implement a patch to correct this issue. The issue report is flagged as already-fixed.
Weakness: CWE-404
Which versions are affected by CVE-2026-1586?
It affects 1 product.
Products include Open5gs Open5gs.
How do I fix CVE-2026-1586?
No fix has been published for CVE-2026-1586 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-2026-1586 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1586 exists.
Other vulnerabilities in Open5gs Open5gs
Sources
Also known as GHSA-6cvf-4x5f-rv59.