Guilherme Rambo • 5/12/2025

A Privacy Mechanism That Backfired

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This technical article details the discovery of CVE-2025-31212, an iOS vulnerability where a privacy mechanism backfired. In iOS 18, Apple updated Bluetooth permission prompts to show nearby devices, raising user awareness. However, the process of assembling this prompt data within the app's process allowed a malicious app to access Bluetooth LE device information before user consent was granted, exploiting the very feature meant to enhance transparency.

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#vulnerability #privacy #Io
A Privacy Mechanism That Backfired

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