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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductBackup Key Recovery
PublishedJan 16, 2026
First seenJan 16, 2026
Weakness typeCWE-120CWE-120
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Nsauditor Backup Key Recovery | 2.2.7.0 | — |
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