CVE-2021-47798

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.

CVSS v4.0

6.7 MEDIUMCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.40% chance of exploitation in the next 30 days, 33th percentile

Published

2026-01-15

Updated

2026-01-16

Proof-of-concept exploits (2)

• https://www.exploit-db.com/exploits/50154
• https://www.vulncheck.com/advisories/noteburner-denial-of-service-dos-poc

References

• CVE Record
• NVD entry

Related

• CVE-2021-47797
• CVE-2021-47799
• CVE-2021-47796
• CVE-2021-47800
• CVE-2021-47795
• CVE-2021-47801