PT-2026-39518 · Unknown · Memono Notepad

Geovanni Ruiz · Published 2026-05-10 · Updated 2026-05-10 · CVE-2021-47944

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions memono Notepad version 4.2

Description A denial of service issue allows attackers to crash the application on iOS devices. This occurs when excessively long character buffers are pasted into note fields. Specifically, pasting a payload containing 350,000 repeated characters twice into a new note triggers the crash.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Weakness Enumeration

CWE-789

Related Identifiers

CVE-2021-47944

Affected Products

Memono Notepad

References · 4

• 🔥 https://exploit-db.com/exploits/49977 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-47944 · Security Note
• https://twitter.com/CVEnew/status/2053537422257102982 · Twitter Post
• https://vulncheck.com/advisories/memono-notepad-denial-of-service-via-buffer-overflow · Note