CVE-2021-47813: Nsauditor Backup Key Recovery

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Nsauditor Backup Key Recovery: version 2.2.7.0 only

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