CVE-2021-47813
highpriority · track · 0EPSS 0.004 · 34 %ileEUEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4–7.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (1)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (9)
External citations — patches, advisories, analysis.
- http://www.nsauditor.comcnnvd
- https://www.exploit-db.com/exploits/49966cnnvd
- https://www.vulncheck.com/advisories/backup-key-recovery-denial-of-service-poccnnvd
- http://www.nsauditor.comenisa_euvd
- https://www.exploit-db.com/exploits/49966enisa_euvd
- https://www.vulncheck.com/advisories/backup-key-recovery-denial-of-service-pocenisa_euvd
- http://www.nsauditor.comnvd
- https://www.exploit-db.com/exploits/49966nvd
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