threat-intel A Malicious SIM Card Can Run Attacker Code Inside the Modems Behind Cellular IoT Devices Researchers at the University of Birmingham and Fuzzware discovered a vulnerability in cellular IoT devices that allows a malicious SIM card to execute commands on the device. The vulnerability stems from a SIM card's ability to issue proactive commands to the modem, bypassing standard security measures. Nine devices,… The Hacker News · Aug 11, 2026 High CVE-2025-48618CVE-2026-57550CVE-2021-31698UNiotcellularsim card
threat-intel Malicious SIMs can shut down phones, steal files, and drag 5G back to 2G This article discusses a security vulnerability where malicious actors are exploiting SIM cards to disable phones, steal data, and potentially downgrade connections to 2G, enabling more sophisticated phishing attacks. Th… The Register · Aug 11, 2026 High CVE-2025-48618CHRUsim cardphishingtelecom security
