PT-2026-41457 · Unknown · My Notes Safe

Geovanni Ruiz · Published 2026-05-16 · Updated 2026-05-17 · CVE-2021-47971

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 My Notes Safe version 5.3

Description A denial of service issue exists where attackers can crash the application by pasting excessively long character strings into note fields. This is triggered by generating a payload containing 350000 repeated characters and pasting it twice into a new note.

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-2021-47971

Affected Products

My Notes Safe

References · 5

• 🔥 https://exploit-db.com/exploits/49954 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-47971 · Security Note
• https://twitter.com/CVEnew/status/2055866574607679932 · Twitter Post
• https://vulncheck.com/advisories/my-notes-safe-denial-of-service-via-buffer-overflow · Note
• https://t.me/CVEtracker/54011 · Telegram Post