CVE-2026-8249 Open5GS SMF npcf-handler.c update_authorized_pcc_rule_and_qos denial of service
Remote attackers can cause a denial of service in Open5GS SMF via the update_authorized_pcc_rule_and_qos function.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-8249?
CVE-2026-8249 is a medium-severity denial of service vulnerability in Open5gs Open5gs, published on 10 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A flaw has been found in Open5GS up to 2.7.7. The impacted element is the function update_authorized_pcc_rule_and_qos of the file /src/smf/npcf-handler.c of the component SMF. This manipulation causes denial of service. Remote exploitation of the attack is possible. The exploit has been published and may be used. 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-2026-8249?
It affects 1 product.
Products include Open5gs Open5gs.
How do I fix CVE-2026-8249?
No fix has been published for CVE-2026-8249 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-2026-8249 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-8249 exists.
Other vulnerabilities in Open5gs Open5gs
Sources
Also known as GHSA-qhrx-45m5-grgp.