CVE-2026-54999

HIGH

Microsoft Windows TCP/IP - Race Condition Remote Code Execution

Title source: manual
STIX 2.1

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows TCP/IP allows an unauthorized attacker to execute code over an adjacent network.

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory patch
Windows TCP/IP Remote Code Execution Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54999

Scores

CVSS v3 8.8
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Details

CWE
CWE-362
Status published
Products (18)
Microsoft/Windows 10 Version 1607 10.0.14393.0 - 10.0.14393.9339
Microsoft/Windows 10 Version 1809 10.0.17763.0 - 10.0.17763.9020
Microsoft/Windows 10 Version 21H2 10.0.19044.0 - 10.0.19044.7548
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 - 10.0.26200.8875
Microsoft/Windows 11 version 26H1 10.0.28000.0 - 10.0.28000.2525
Microsoft/Windows Server 2012 6.2.9200.0 - 6.2.9200.26226
Microsoft/Windows Server 2012 (Server Core installation) 6.2.9200.0 - 6.2.9200.26226
Microsoft/Windows Server 2012 R2 6.3.9600.0 - 6.3.9600.23291
... and 8 more
Published Jul 14, 2026
Tracked Since Jul 14, 2026