CVE-2021-47813

high

Description

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.

References

https://www.vulncheck.com/advisories/backup-key-recovery-denial-of-service-poc

https://www.exploit-db.com/exploits/49966

http://www.nsauditor.com

Details

Source: Mitre, NVD

Published: 2026-01-16

Updated: 2026-01-16

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High