CVE-2025-2329

High traffic causes corrupt SPI packets in OpenThread leading to denial of service

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.

Category

5.3
CVSS
Severity: Medium
CVSS 4.0 •
EPSS 0.01%
Vendor Advisory silabs.com
Affected: silabs.com OpenThread
Published at:
Updated at:

References

Link Tags
https://github.com/SiliconLabs/simplicity_sdk/releases release notes
https://github.com/SiliconLabs/gecko_sdk/releases release notes
https://community.silabs.com/069Vm00000SNyueIAD permissions required vendor advisory

Frequently Asked Questions

What is the severity of CVE-2025-2329?
CVE-2025-2329 has been scored as a medium severity vulnerability.
How to fix CVE-2025-2329?
To fix CVE-2025-2329, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-2329 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-2329 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-2329?
CVE-2025-2329 affects silabs.com OpenThread.
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