Strix
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CVE-2026-40414

HIGHCVSS 7.4/10EPSS 0.53%

Last modified

CVE-2026-40414 is a high-severity vulnerability rated 7.4/10 on the CVSS scale. Windows TCP/IP Denial of Service Vulnerability. EPSS estimates a 0.53% chance of exploitation in the next 30 days.

Description

Windows TCP/IP Denial of Service Vulnerability

Metrics

CVSS 3.1
7.4/10

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

EPSS Probability
0.53%

40.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
MicrosoftWindows 10 1607< 10.0.14393.9140
MicrosoftWindows 10 1809< 10.0.17763.8755
MicrosoftWindows 10 21h2< 10.0.19044.7291
MicrosoftWindows 10 22h2< 10.0.19045.7291
MicrosoftWindows 11 23h2< 10.0.22631.7079
MicrosoftWindows 11 24h2< 10.0.26100.8390
MicrosoftWindows 11 25h2< 10.0.26200.8390
MicrosoftWindows 11 26h1< 10.0.28000.2113
MicrosoftWindows Server 2012All versions
MicrosoftWindows Server 2012r2
MicrosoftWindows Server 2016< 10.0.14393.9140
MicrosoftWindows Server 2019< 10.0.17763.8755
MicrosoftWindows Server 2022< 10.0.20348.5074
MicrosoftWindows Server 2022 23h2< 10.0.25398.2330
MicrosoftWindows Server 2025< 10.0.26100.32772

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2026-40414?
Windows TCP/IP Denial of Service Vulnerability
How severe is CVE-2026-40414?
CVE-2026-40414 has a CVSS score of 7.4/10 (HIGH severity). The EPSS model estimates a 0.53% probability of exploitation in the next 30 days.
How do I fix CVE-2026-40414?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-40414?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST