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CRITICAL · 9.8

CVE-2026-44815

Stack-based buffer overflow in Windows DHCP Client allows an unauthorized attacker to execute code over a network.

Vulnerability Description

Stack-based buffer overflow in Windows DHCP Client allows an unauthorized attacker to execute code over a network.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
MicrosoftWindows 10 1607< 10.0.14393.9234
MicrosoftWindows 10 1809< 10.0.17763.8880
MicrosoftWindows 10 21H2< 10.0.19044.7417
MicrosoftWindows 10 22H2< 10.0.19045.7417
MicrosoftWindows 11 23H2< 10.0.22631.7219
MicrosoftWindows 11 24H2< 10.0.26100.8655
MicrosoftWindows 11 25H2< 10.0.26200.8655
MicrosoftWindows 11 26H1< 10.0.28000.2269
MicrosoftWindows Server 2012-
MicrosoftWindows Server 2016< 10.0.14393.9234
MicrosoftWindows Server 2019< 10.0.17763.8880
MicrosoftWindows Server 2022< 10.0.20348.5256
MicrosoftWindows Server 2025< 10.0.26100.32995

Related Weaknesses (CWE)

CWE-121

References

FAQ

What is CVE-2026-44815?

CVE-2026-44815 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Stack-based buffer overflow in Windows DHCP Client allows an unauthorized attacker to execute code over a network.

How severe is CVE-2026-44815?

CVE-2026-44815 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-44815?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21H2, Microsoft Windows 10 22H2, Microsoft Windows 11 23H2.