# CVE-2026-16769: Silicon Labs RS9116W/SiWx917 denial of service via unencrypted pause request

Source: https://junglewise.ai/threats/cve-2026-16769-silicon-labs-rs9116w-siwx917-denial-of-service-via-unencrypted  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-08. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-16769 · Severity: info · Published 2026-09-08

The RS9116W and SiWx917 are wireless connectivity modules used in IoT and embedded devices. An attacker can send an unencrypted pause encryption request message to cause the device to stop responding, resulting in a denial of service that affects device availability and operations.

Vendors: [Silicon Labs](https://junglewise.ai/threats/vendors/silicon-labs).

## Quick answers

**Is CVE-2026-16769 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-16769 being exploited in the wild.

**How severe is CVE-2026-16769?** Informational severity, published 8 September 2026.

**Which products and versions are affected?** Silicon Labs RS9116W; Silicon Labs SiWx917.

**Is there a fix for CVE-2026-16769?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-16769 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-16769?** Check whether you run Silicon Labs RS9116W or Silicon Labs SiWx917. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

This vulnerability involves a denial of service condition triggered by an unencrypted 'pause encryption request' message in the RS9116W and SiWx917 wireless modules. The root cause appears to be insufficient validation of encryption state before processing pause requests. An attacker with network access can send a crafted unencrypted message to trigger the denial of service condition. The vulnerability is documented as B-E10 in related research. No patch information is currently available based on the advisory text.

## Affected products

- Silicon Labs RS9116W
- Silicon Labs SiWx917

## Timeline

- 2026-09-08: disclosed

## References

- [https://arxiv.org/pdf/2409.02905](https://arxiv.org/pdf/2409.02905)
- [https://community.silabs.com/068Vm00000x0Yqy](https://community.silabs.com/068Vm00000x0Yqy)