CVE-2026-58598

High

Description

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

SeverityHigh

CVSS7.0

Exploit probability—

Product

Microsoft Windows

PublishedJul 16, 2026

First seenJul 16, 2026

Weakness typeCWE-362Race condition CWE-416Use after free

How to fix

Update

microsoft windows_10_21h210.0.19044.7548 or later
microsoft windows_10_22h210.0.19045.7548 or later
microsoft windows_11_24h210.0.26100.8875 or later
microsoft windows_11_25h210.0.26200.8875 or later
microsoft windows_11_26h110.0.28000.2525 or later

Patches

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58598

Affected products

Product	Affected versions	Fixed in
microsoft windows_10_21h2	v < 10.0.19044.7548	10.0.19044.7548
microsoft windows_10_22h2	v < 10.0.19045.7548	10.0.19045.7548
microsoft windows_11_24h2	v < 10.0.26100.8875	10.0.26100.8875
microsoft windows_11_25h2	v < 10.0.26200.8875	10.0.26200.8875
microsoft windows_11_26h1	v < 10.0.28000.2525	10.0.28000.2525

Check your version

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