CVE-2021-47813
HIGHBackup Key Recovery <2.2.7 - DoS
Title source: llmDescription
Backup Key Recovery 2.2.7 contains a denial of service vulnerability that allows attackers to crash the application by overflowing the registration code input field. Attackers can paste a large buffer of 256 repeated characters into the registration key field to trigger application instability and potential crash.
Exploits (1)
exploitdb
WORKING POC
by Erick Galindo · pythonlocalwindows
https://www.exploit-db.com/exploits/49966
Scores
CVSS v3
7.5
EPSS
0.0001
EPSS Percentile
2.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-120
Status
published
Published
Jan 16, 2026
Tracked Since
Feb 18, 2026