CVE-2026-17610 RAIL 802.15.4 Mux missing ACK can lead to DoS
High network traffic can cause dropped ACKs in concurrent Zigbee/Thread modes, leading to denial of service on specific Silicon Labs devices.
- 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-2026-17610?
CVE-2026-17610 is a medium-severity denial of service vulnerability in Silicon Labs SiSDK, published on 27 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In SiSDK v2026.6.0 and earlier, high network traffic loads can cause a dropped ACK leading to a denial of service. This is only present for EFR32MG24 and EFR32MG26 devices running concurrent multiprotocol Zigbee and Thread.
Weakness: CWE-404
Which versions are affected by CVE-2026-17610?
How do I fix CVE-2026-17610?
No fix has been published for CVE-2026-17610 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-2026-17610 being exploited?
There is no known exploitation of CVE-2026-17610 in the wild and no public exploit code.
Sources
Also known as GHSA-p7h7-26v3-v26r.