CVE-2025-2329 High traffic causes corrupt SPI packets in OpenThread leading to denial of service
High traffic causes corrupt SPI packets in Silicon Labs OpenThread RCP, leading to host resets and denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-2329?
CVE-2025-2329 is a medium-severity denial of service vulnerability in silabs.com OpenThread, published on 25 Jul 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In high traffic environments, a Silicon Labs OpenThread RCP (see impacted versions) fails to clear the SPI transmit buffer and may send a corrupt packet over SPI to its host, causing the host to reset the RCP which results in a denial of service.
Weakness: CWE-908
Which versions are affected by CVE-2025-2329?
How do I fix CVE-2025-2329?
No fix has been published for CVE-2025-2329 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-2025-2329 being exploited?
There is no known exploitation of CVE-2025-2329 in the wild and no public exploit code.
Sources
Also known as GHSA-q46p-vh9h-4p2c.