CVE-2021-47944: Memono Notepad

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

memono Notepad 4.2 contains a denial of service vulnerability that allows attackers to crash the application by pasting excessively long character buffers into note fields. Attackers can generate a payload containing 350000 repeated characters and paste it twice into a new note to trigger an application crash on iOS devices.

Affected products

• Memono Notepad: version 4.2 only

Published 2026-05-10. Last modified 2026-07-25.