High severity7.5NVD Advisory· Published Jan 16, 2026· Updated Apr 15, 2026
CVE-2021-47813
CVE-2021-47813
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.
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Affected products
1- Range: = 2.2.7
Patches
Vulnerability mechanics
References
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