CVE-2021-47813

6.7 mediumEPSS 0.4%

Medium (6.7). 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.

Severity

CVSS 4.0

6.7 medium

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 34% of CVEs (scores of 2026-10-31)
CWE: CWE-120
Published: 2026-01-16
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

References

http://www.nsauditor.com
https://www.exploit-db.com/exploits/49966
https://www.vulncheck.com/advisories/backup-key-recovery-denial-of-service-poc

Check your stack JSON