Vulnerability · Published Jul 25, 2025 · Assigned by Silabs
CVE-2025-2329High traffic causes corrupt SPI packets in OpenThread leading to denial of service
Medium 5.3
In plain English
A medium-severity security flaw in OpenThread from silabs.com. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities).
Severity (CVSS 4.0)5.3Medium
Exploit odds (30 days)0.2%top 83.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| silabs.com | OpenThread | 2.5.0 – through 2.5.22.6.0 – through 2.6.20 – through 2.4.6 |
Weakness: CWE-908 · Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
References
- https://github.com/SiliconLabs/simplicity_sdk/releases release-notes
- https://github.com/SiliconLabs/gecko_sdk/releases release-notes
- https://community.silabs.com/069Vm00000SNyueIAD vendor-advisory, permissions-required