CVE-2025-8804 Open5GS AMF ngap_build_downlink_nas_transport assertion
Remote attackers can trigger a reachable assertion in Open5GS AMF, 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-2025-8804?
CVE-2025-8804 is a medium-severity denial of service vulnerability in Open5gs Open5gs, published on 10 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was found in Open5GS up to 2.7.5. Affected by this vulnerability is the function ngap_build_downlink_nas_transport of the component AMF. The manipulation leads to reachable assertion. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 2.7.6 is able to address this issue. The identifier of the patch is bca0a7b6e01d254f4223b83831162566d4626428. It is recommended to upgrade the affected component.
Weakness: CWE-617
Which versions are affected by CVE-2025-8804?
It affects 1 product.
Products include Open5gs Open5gs.
How do I fix CVE-2025-8804?
No fix has been published for CVE-2025-8804 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-2025-8804 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-8804 exists.
Other vulnerabilities in Open5gs Open5gs
Sources
Also known as GHSA-678r-9946-9xwp.