CVE-2026-2517 Open5GS SMF types.c ogs_gtp2_parse_tft denial of service
Remote attackers can cause a denial of service in Open5GS SMF by manipulating GTPv2 TFT parsing arguments.
- 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-2026-2517?
CVE-2026-2517 is a medium-severity denial of service vulnerability in Open5gs Open5gs, published on 15 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A security flaw has been discovered in Open5GS up to 2.7.6. This vulnerability affects the function ogs_gtp2_parse_tft in the library lib/gtp/v2/types.c of the component SMF. Performing a manipulation of the argument pf[0].content.length results in denial of service. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
Weakness: CWE-404
Which versions are affected by CVE-2026-2517?
It affects 1 product.
Products include Open5gs Open5gs.
How do I fix CVE-2026-2517?
No fix has been published for CVE-2026-2517 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-2026-2517 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2517 exists.
Other vulnerabilities in Open5gs Open5gs
Sources
Also known as GHSA-rpcc-624p-hfv6.