An urgent Android security alert has been issued due to a critical vulnerability that could potentially allow cyber attackers to bypass a phone’s lock screen. The flaw, identified by security researchers, enables hackers to exploit the vulnerability and gain access to sensitive data stored on the device within a minute.
The security issue, known as CVE-2026-20435, impacts specific Android devices powered by MediaTek processors, which are commonly found in many affordable smartphones. This vulnerability allows attackers to extract encryption keys before the device fully boots up, circumventing security measures like full-disk encryption and lock screen protection.
Malwarebytes experts explained that the vulnerability affects MediaTek System-on-a-Chip (SoC) devices using Trustonic’s Trusted Execution Environment (TEE), which includes around one in four Android phones, particularly budget-friendly models. By connecting a vulnerable phone to a laptop through USB, researchers demonstrated how they could retrieve the device’s PIN, decrypt the storage, and access sensitive information such as seed phrases from software wallets.
To mitigate the risk, users are advised to check their phone’s processor information in the settings menu and ensure to install any available security updates promptly, especially if the device runs on a MediaTek chip. MediaTek has already released a fix for the vulnerability, but users must wait for individual device manufacturers to distribute the update through software patches. Keeping devices updated with the latest software is crucial for enhanced protection against such threats.
It is important to note that this attack requires physical access to the device. By maintaining possession of the phone and regularly updating it, users can significantly reduce the risk of exploitation. However, users with older devices that no longer receive updates are advised to exercise caution or consider upgrading to a more secure device to mitigate potential security risks.