CVE-2021-47813

Backup Key Recovery 2.2.7 - Denial of Service (PoC)

Published Jan 15, 2026 CVSS 4.0 · 6.7 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Nsauditor
Nsauditor backup Key Recovery
Vendors & Products Nsauditor
Nsauditor backup Key Recovery
Type Values Removed Values Added
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.
Title Backup Key Recovery 2.2.7 - Denial of Service (PoC)
Weaknesses CWE-120
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6.7, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Jan 16, 2026, 3:48 PM
Reserved
Jan 14, 2026, 5:11 PM
Status
Deferred
Published
Jan 16, 2026, 12:16 AM
Modified
Jun 17, 2026, 4:18 AM