🛡️ CVE-2026-40399
🟠 CVSS 7.8 — High ✅ No Known Exploit NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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

Details

Severity High
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2026-05-12
Updated 2026-06-02
Modified N/A
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown
windows-10-1607 10.0.14393.9140
windows-10-1809 10.0.17763.8755
windows-10-21h2 10.0.19044.7291
windows-10-22h2 10.0.19045.7291
windows-11-23h2 10.0.22631.7079
windows-11-24h2 10.0.26100.8390
windows-11-25h2 10.0.26200.8390
windows-11-26h1 10.0.28000.2113
windows-server-2016 10.0.14393.9140
windows-server-2019 10.0.17763.8755
windows-server-2022 10.0.20348.5074
windows-server-2022-23h2 10.0.25398.2330
windows-server-2025 10.0.26100.32772

References

N/A

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