CVE-2021-47944

high

Description

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.

References

https://www.vulncheck.com/advisories/memono-notepad-denial-of-service-via-buffer-overflow

https://www.exploit-db.com/exploits/49977

Details

Source: Mitre, NVD

Published: 2026-05-10

Updated: 2026-05-10

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High