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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.

PUBLISHED Reserved 2026-01-14 | Published 2026-01-15 | Updated 2026-01-16 | Assigner VulnCheck




MEDIUM: 6.7CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Product status

2.2.7.0
affected

Credits

Erick Galindo finder

References

www.exploit-db.com/exploits/49966 (ExploitDB-49966) exploit

www.nsauditor.com (Vendor Homepage) product

www.vulncheck.com/...ckup-key-recovery-denial-of-service-poc (VulnCheck Advisory: Backup Key Recovery 2.2.7 - Denial of Service (PoC)) third-party-advisory

cve.org (CVE-2021-47813)

nvd.nist.gov (CVE-2021-47813)

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