Ledger Uncovers Vulnerability in MediaTek Dimensity Chip

Ledger’s Donjon team uncovered a security flaw in MediaTek’s Dimensity 7300 chip, affecting Android Web3 wallets, as reported by PANews on December 4, highlighting digital asset risks.

This discovery stresses the importance of secure elements for digital asset protection, as smartphone chips prove inadequate, impacting the broader cryptocurrency security landscape.

MediaTek Dimensity 7300 Flaw Threatens Web3 Wallet Security

Ledger’s Donjon team identified a hardware-level flaw in MediaTek’s Dimensity 7300 chip, revealing that attackers with physical access can exploit electromagnetic fault injection (EMFI) to gain control. While Ledger’s hardware wallets remain unaffected, smartphones using this chip may compromise crypto wallets.

This finding highlights the security risks associated with poor protection on general-purpose chips like the Dimensity 7300. Commercial response has been tepid as the chip targets consumer devices rather than high-security environments. MediaTek has framed these attacks as outside the chip’s intended security scope.

Reactions from the security community suggest this discovery could be a turning point. Key stakeholders urge caution regarding smartphone-based key management, with security experts branding this vulnerability as proof of the need for secure elements within digital asset management systems.

“EMFI allowed us to extract the boot ROM and gain total control of a device…this is a hardware-level defeat of the root of trust rather than a simple software bug.” – Ledger’s CTO, Ledger

Industry Experts Urge Use of Secure Hardware Wallets

Did you know? Vulnerabilities like those found in the MediaTek Dimensity 7300 chip highlight why secure elements have been standard in hardware wallets since Ledger’s launch in 2014, ensuring immunity to such hardware attacks.

Bitcoin (BTC) currently trades at $91,356.92, with a market cap of $1.82 trillion and a dominance of 58.89%, based on CoinMarketCap data as of December 4, 2025. The 24-hour trading volume decreased 15.60% to $66.44 billion, while prices declined 1.50%.

The Coincu research team suggests that such vulnerabilities could elevate the importance of hardware wallets among high-value holders. This could also potentially transition toward stricter regulations, aiming to secure devices handling digital assets through enhanced technological safeguards.