Race Condition Vulnerability in Windows Backup Engine by Microsoft
CVE-2026-58598

7HIGH

Key Information:

Vendor

Microsoft
Status
Windows 10 Version 21h2
Windows 10 Version 22h2
Windows 11 Version 24h2
Windows 11 Version 25h2
Vendor
CVE Published:
16 July 2026

What is CVE-2026-58598?

A race condition exists in the Windows Backup Engine, which can be exploited by authorized attackers to elevate their privileges locally, potentially allowing them to perform unauthorized actions and gain access to sensitive data.

Affected Version(s)

Windows 10 Version 21H2 32-bit Systems 10.0.19044.0 < 10.0.19044.7548

Windows 10 Version 22H2 32-bit Systems 10.0.19045.0 < 10.0.19045.7548

Windows 11 Version 24H2 ARM64-based Systems 10.0.26100.0 < 10.0.26100.8875

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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