CVE-2021-47798: Noteburner

Critical severity, CVSS 9.8. EPSS: 0.4% chance of exploitation in the next 30 days.

NoteBurner 2.35 contains a buffer overflow vulnerability in the license code input field that allows attackers to crash the application. Attackers can generate a 6000-byte payload and paste it into the 'Name' and 'Code' fields to trigger an application crash.

Affected products

• Noteburner Noteburner: version 2.35 only

Published 2026-01-16. Last modified 2026-06-17.