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CVE-2022-21925: Windows BackupKey Remote Protocol Security Feature Bypass Vulnerability

• Severity: medium (CVSS 5.4 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-01-11 · updated 2026-06-17

Description

Windows BackupKey Remote Protocol Security Feature Bypass Vulnerability

Affected products

• Microsoft Windows 7: all versions
• Microsoft Windows Server 2008: r2-sp1
• Microsoft Windows 7: from 6.1.0 before 6.1.7601.25829 — fixed in 6.1.7601.25829
• Microsoft Windows 7 Service Pack 1: from 6.1.0 before 6.1.7601.25829 — fixed in 6.1.7601.25829
• Microsoft Windows Server 2008 R2 Service Pack 1: from 6.1.7601.0 before 6.1.7601.25829 — fixed in 6.1.7601.25829
• Microsoft Windows Server 2008 Service Pack 2: from 6.0.6003.0 before 6.0.6003.21349 — fixed in 6.0.6003.21349

How to fix

Upgrade to a fixed version: Microsoft Windows 7 6.1.7601.25829; Microsoft Windows 7 Service Pack 1 6.1.7601.25829; Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.25829; Microsoft Windows Server 2008 Service Pack 2 6.0.6003.21349. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21925
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21925

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