CVE-2021-20733: Asken

Medium severity, CVSS 6.1. EPSS: 0.8% chance of exploitation in the next 30 days.

Improper authorization in handler for custom URL scheme vulnerability in あすけんダイエット (asken diet) for Android versions from v.3.0.0 to v.4.2.x allows a remote attacker to lead a user to access an arbitrary website via the vulnerable App.

Affected products

• Asken Asken: from 3.0.0, before 4.3.0 (fixed in 4.3.0)

Published 2021-06-22. Last modified 2026-06-17.