CVE-2021-47944

HighPublic PoC

Published: 10 May 2026

Published

10 May 2026

Modified

10 May 2026

KEV Added

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Patch

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CVSS Score 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Score N/A

Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-47944 is a high-severity Memory Allocation with Excessive Size Value (CWE-789) vulnerability. Its CVSS base score is 7.5 (High).

Operationally, it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

NVD 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.

Deeper analysisAI

Automated synthesis unavailable for this CVE.