CVE-2025-2329

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

MEDIUM
5.3
CVSS Score
Published: July 25, 2025 at 03:49 PM UTC
Updated: June 17, 2026 at 09:06 AM UTC
1 product affected across 1 vendorOpenThread

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 2.4.62.5.0 ≤ v ≤ 2.5.22.6.0 ≤ v ≤ 2.6.22.5.02.6.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMSilabs
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-908

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