An urgent security alert has been issued for Android users due to a critical vulnerability that could enable hackers to bypass a phone’s lock screen. The flaw, discovered by security researchers, poses a significant threat as attackers can exploit it to access personal data and all content stored on the device within minutes.
The vulnerability, identified as CVE-2026-20435, impacts specific Android devices running on MediaTek processors, commonly found in budget-friendly smartphones. Security experts warn that cybercriminals can extract encryption keys before the system fully boots, circumventing security features like full-disk encryption and lock screen protections.
Malwarebytes experts highlighted that the flaw affects MediaTek System-on-a-Chip (SoC) devices utilizing Trustonic’s TEE, which accounts for approximately one in four Android phones, particularly lower-end models. Demonstrations showed that by connecting a vulnerable phone to a laptop via USB, attackers could swiftly retrieve the device’s PIN, decrypt its storage, and obtain sensitive information from software wallets.
To mitigate the risk, users are advised to check their phone’s processor information in the device settings and ensure prompt installation of any available security updates, especially if their device operates on a MediaTek chip. While MediaTek has released a fix, individual device manufacturers need to distribute it through software updates. Keeping devices up to date is crucial for protection against such vulnerabilities.
It is essential to emphasize that this attack requires physical access to the device. By maintaining possession of the phone and regularly updating it, users can minimize the risk significantly. However, older devices that no longer receive updates may remain vulnerable, necessitating extra caution or consideration of upgrading to newer models.