CVE-2026-58598

HIGH

Microsoft Windows 10 Version 21H2 - Windows Backup Service Elevation of Privilege Vulnerability

Title source: rule
STIX 2.1

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Backup Engine allows an authorized attacker to elevate privileges locally.

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory patch
Windows Backup Service Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58598

Scores

CVSS v3 7.0
EPSS 0.0019
EPSS Percentile 8.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-362 CWE-416
Status published
Products (12)
Microsoft/Windows 10 Version 21H2 10.0.19044.0 - 10.0.19044.7548
Microsoft/Windows 10 Version 22H2 -
Microsoft/Windows 10 Version 22H2 10.0.19045.0 - 10.0.19045.7548
Microsoft/Windows 11 Version 24H2 10.0.26100.0 - 10.0.26100.8875
Microsoft/Windows 11 Version 25H2 10.0.26200.0 - 10.0.26100.8875
Microsoft/Windows 11 Version 25H2 10.0.26200.0 - 10.0.26200.8875
Microsoft/Windows 11 version 26H1 10.0.28000.0 - 10.0.28000.2525
microsoft/windows_10_21h2 < 10.0.19044.7548
microsoft/windows_10_22h2 < 10.0.19045.7548
microsoft/windows_11_24h2 < 10.0.26100.8875
... and 2 more
Published Jul 16, 2026
Tracked Since Jul 17, 2026