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Android ‘Pixnapping’ Attack Can Lift 2FA Codes in Under 30 Seconds, Researchers Say

The exploit uses GPU timing to infer pixel colors without special permissions.

Overview

  • Security researchers disclosed Pixnapping, a GPU side-channel technique that reconstructs on-screen content quickly enough to capture time-sensitive two-factor codes.
  • Demonstrations recovered codes from apps such as Google Authenticator on devices including Pixel 6–9 and Galaxy S25 running Android 13–16.
  • Google assigned the issue CVE-2025-48561 with a High Severity rating and rolled out temporary API restrictions in September.
  • The research team reports those mitigations can be bypassed, and Google plans further fixes in the December 2025 update, while a durable solution will require core OS changes.
  • It is not clear whether the method is being used in the wild, and experts advise installing only trusted apps, enabling Play Protect or antivirus, and minimizing on-screen exposure of sensitive codes.