Critical Security Flaw in MediaTek Chips Exposes Android Crypto Wallets
Ledger’s security research team, Donjon, revealed on March 11, 2026, that vulnerabilities in MediaTek chips could allow attackers to access encrypted data within Android devices, including sensitive cryptocurrency wallet information. This exploit can happen through a simple USB link, posing major risks for cryptocurrency users.
The identified issues stem from flaws in common MediaTek processors utilized in roughly 25% of Android devices, which could allow attackers to extract crucial wallet data, such as PINs and recovery phrases. Ledger noted that attackers with physical access could breach devices rapidly, decrypting storage in approximately 45 seconds, particularly targeting wallets like Trust Wallet and Kraken Wallet. Given the significant rise in cryptocurrency thefts, which totaled $2.17 billion in 2025, this risk highlights the need for immediate user vigilance.
Exploit Mechanisms and Impact
Two significant vulnerabilities were highlighted in the report. The first involves a flaw in the Secure Boot Chain that impacts MediaTek processors equipped with Trustonic Trusted Execution Environment (TEE) and is patchable via software updates. This issue presents a substantial threat as it allows attackers with physical access to retrieve encryption keys through a USB method. Consequently, millions of devices may be at risk unless software patches are implemented swiftly.
The second, more severe vulnerability relates to the Dimensity 7300 Boot ROM, a hardware-level flaw exempt from software fixes. This defect allows remote code execution through electromagnetic fault injection, enabling hackers to gain full control over compromised devices in a matter of minutes. As the attack isn’t reliant on conventional malware or physical access, it is especially alarming for users of mid-range Android devices.
According to reports, this vulnerability affects devices across various manufacturers and models, making it essential for users to take proactive measures. The lack of a full model list complicates the risk assessment for countless Android users globally. Both Ledger and MediaTek have emphasized the importance of software updates and securing devices using hardware wallets not susceptible to physical attacks.
Recommendations and Security Measures
Ledger has advised users to cease reliance on software wallets when using vulnerable Android devices. The company underscored that hardware solutions incorporating secure elements are more resistant to physical threats. Furthermore, all users are urged to immediately apply any available software patches to mitigate these vulnerabilities.
MediaTek acknowledged that consumer chips, specifically the MT6878, were never designed to withstand electromagnetic fault injections and suggested integrating dedicated secure elements for applications requiring heightened security. This reality accentuates the necessity for manufacturers to invest in more robust security features, especially as the demand for cryptocurrency continues to surge.
As users navigate this heightened vulnerability landscape, they may need to reconsider their digital asset management strategies. Experts are advising users to evaluate alternative methods for securing their crypto investments, including exploring dedicated hardware wallets that fortify asset storage against digital vulnerabilities.
