CVE-2021-47944

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.exploit-db.com/exploits/49977
https://www.vulncheck.com/advisories/memono-notepad-denial-of-service-via-buffer-overflow

Configurations

No configuration.

History

No history.

Information

Published : 2026-05-10 13:16

Updated : 2026-07-25 10:10

NVD link : CVE-2021-47944

Mitre link : CVE-2021-47944

CVE.ORG link : CVE-2021-47944

JSON object : View

Products Affected

No product.

CWE

CWE-789

Memory Allocation with Excessive Size Value

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