CVE-2025-15531 Open5GS context.c sgwc_bearer_add assertion
Remote attackers can trigger a reachable assertion in Open5GS, causing a denial of service in the SGWC bearer addition process.
- 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-2025-15531?
CVE-2025-15531 is a medium-severity denial of service vulnerability in Open5gs Open5gs, published on 17 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was identified in Open5GS up to 2.7.5. This vulnerability affects the function sgwc_bearer_add of the file src/sgwc/context.c. The manipulation leads to reachable assertion. The attack is possible to be carried out remotely. The exploit is publicly available and might be used. The issue report is flagged as already-fixed.
Weakness: CWE-617
Which versions are affected by CVE-2025-15531?
It affects 1 product.
Products include Open5gs Open5gs.
How do I fix CVE-2025-15531?
No fix has been published for CVE-2025-15531 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-2025-15531 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-15531 exists.
Other vulnerabilities in Open5gs Open5gs
Sources
Also known as GHSA-359g-wg43-pfv8.