CVE-2025-15684 Open5GS CER init.c diam_log_func assertion
Remote attackers can trigger a reachable assertion in the CER handler, causing a denial of service in Open5GS.
- 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-2025-15684?
CVE-2025-15684 is a medium-severity denial of service vulnerability in Open5GS, published on 12 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was detected in Open5GS up to 2.7.6. Affected is the function diam_log_func of the file lib/diameter/common/init.c of the component CER Handler. The manipulation results in reachable assertion. The attack can be executed remotely. The exploit is now public and may be used. Upgrading to version 2.7.7 is able to address this issue. The patch is identified as c1a803516a3c0485696cb9bcca7a80ad857c7383. It is advisable to upgrade the affected component.
Weakness: CWE-617
Which versions are affected by CVE-2025-15684?
How do I fix CVE-2025-15684?
No fix has been published for CVE-2025-15684 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-2025-15684 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-15684 exists.
Sources
Also known as GHSA-c5w8-855p-98pc.