CVE-2026-26172 — Race Condition in Microsoft Windows 10 Version 21h2

CWE-362 — Race ConditionCWE-416 — Use After Free3 documents3 sources
Severity
7.8HIGHNVD
EPSS
0.0%
top 84.79%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
9
Microsoft Windows 10 Version 21h2Microsoft Windows 10 Version 22h2Microsoft Windows 11 Version 22h3+6 more
Timeline
PublishedApr 14

Description

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

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:HExploitability: 1.1 | Impact: 6.0

Affected Packages9 packages

▶CVEListV5microsoft/windows_server_202210.0.20348.0 — 10.0.20348.5020
▶CVEListV5microsoft/windows_server_202510.0.26100.0 — 10.0.26100.32690
▶CVEListV5microsoft/windows_10_version_21h210.0.19044.0 — 10.0.19044.7184
▶CVEListV5microsoft/windows_10_version_22h210.0.19045.0 — 10.0.19045.7184
▶CVEListV5microsoft/windows_11_version_22h310.0.22631.0 — 10.0.22631.6936

🔴Vulnerability Details

2
GHSA
GHSA-cq7p-pgp3-4rj8: Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacke↗2026-04-14
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CVEList
Windows Push Notifications Elevation of Privilege Vulnerability↗2026-04-14
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CVE-2026-26172 — Race Condition in Microsoft | cvebase