CVE-2025-5867 RT-Thread lwp_syscall.c csys_sendto null pointer dereference
A null pointer dereference in RT-Thread's csys_sendto function allows attackers to cause a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-5867?
CVE-2025-5867 is a high-severity vulnerability in RT-Thread, published on 9 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability classified as critical was found in RT-Thread 5.1.0. This vulnerability affects the function csys_sendto of the file rt-thread/components/lwp/lwp_syscall.c. The manipulation of the argument to leads to null pointer dereference.
Which versions are affected by CVE-2025-5867?
It affects 1 product.
Products include Rt-Thread Rt-Thread.
How do I fix CVE-2025-5867?
No fix has been published for CVE-2025-5867 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-5867 being exploited?
There is no known exploitation of CVE-2025-5867 in the wild and no public exploit code.
Other vulnerabilities in RT-Thread
Sources
Also known as GHSA-mq4q-q9rw-jvph.