CVE-2021-47970 - CVE House
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Status published High CVE-2021-47970

Macaron Notes 5.5 Denial of Service via Buffer Overflow

Vulnerability Description

Macaron Notes 5.5 contains a denial of service vulnerability that allows attackers to crash the application by creating notes with excessively long character strings. Attackers can generate a payload containing 350000 repeated characters and paste it into a note field to trigger application crash and stop functionality.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Geovanni Ruiz

References

Affected Vendor

Macaron Notes

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Affected Software

Macaron Notes
Vulnerable Versions:
5.5

Timeline

Official Publish: May 16th, 2026
Last Modified: May 25th, 2026
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

CWE-789

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.