CVE-2026-56188

critical · 9.8

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Server Network driver allows an unauthorized attacker to execute code over a network.

9.8

CVSS

0.6%

EPSS (exploit prob.)

48th

EPSS percentile

2026-07-14

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-362

Affected products

Vendor	Product	Affected versions
microsoft	windows_10_1607	< 10.0.14393.9339
microsoft	windows_10_1607	< 10.0.14393.9339
microsoft	windows_10_1809	< 10.0.17763.9020
microsoft	windows_10_1809	< 10.0.17763.9020
microsoft	windows_10_21h2	< 10.0.19044.7548
microsoft	windows_10_22h2	< 10.0.19045.7548
microsoft	windows_11_24h2	< 10.0.26100.8875
microsoft	windows_11_25h2	< 10.0.26200.8875
microsoft	windows_11_26h1	< 10.0.28000.2525
microsoft	windows_server_2012	all versions
microsoft	windows_server_2012	r2
microsoft	windows_server_2016	< 10.0.14393.9339
microsoft	windows_server_2019	< 10.0.17763.9020
microsoft	windows_server_2022	< 10.0.20348.5386
microsoft	windows_server_2025	< 10.0.26100.33158

Check a specific version with /api/v1/cve/match.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56188

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-56188