New Vulnerability Exposes YubiKey 5 Devices to Cloning Attacks

Sept 05, 2024 | A vulnerability known as “Eucleak” puts YubiKey 5 devices with firmware below 5.7 at risk of cloning attacks. The flaw, discovered by NinjaLabs, allows attackers to steal ECDSA private keys, account data, and PINs through side-channel exploitation of the Infineon cryptographic library. Experts urge immediate firmware updates and stronger security practices to mitigate the risk.

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