On Microchip RN4870 devices, when more than one consecutive PairReqNoInputNoOutput request is received, the device becomes incapable of completing the pairing process. A third party can inject a second PairReqNoInputNoOutput request just after a real one, causing the pair request to be blocked.
Solution:
The product does not properly handle when a particular element is not completely specified.
Link | Tags |
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https://www.microchip.com/en-us/product/rn4870 | product |
https://ww1.microchip.com/downloads/aemDocuments/documents/WSG/ProductDocuments/SoftwareLibraries/Firmware/RN4870-71-Firmware-1.44.zip | product release notes technical description |