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CVE-2026-44815

DHCP Client Service Remote Code Execution Vulnerability

Published: Jun 9, 2026Updated: Jul 23, 2026 Sources: CVE List NVD BDUCWE-121
9.8CRITICAL
NVD MITRE
EPSS Score
1.1%
Top 37.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

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

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-121

Affected Products

Microsoft Corp
commercial·USaka Microsoft, microsoft corporation
Windows 10 Version 1607On-premOS
Operating Systems / windows
Windows 11 version 23H2On-premOS
Operating Systems / windows
Windows Server 2012 (Server Core installation)On-premOS
Operating Systems / windows
Windows Server 2012 R2 (Server Core installation)On-premOS
Operating Systems / windows
Windows Server 2016 (Server Core installation)On-premOS
Operating Systems / windows
Windows Server 2019 (Server Core installation)On-premOS
Operating Systems / windows
Windows Server 2022 (Server Core installation)On-premOS
Operating Systems / windows
Windows Server 2025 (Server Core installation)On-premOS
Operating Systems / windows
and 45 more affected products View all →

Exploitability

Official Patch Available
Workaround Available
Is your org exposed to CVE-2026-44815?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44815
msrc.microsoft.com
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44815
msrc.microsoft.com
https://www.zerodayinitiative.com/blog/2026/6/9/the-june-2026-security-update-review
zerodayinitiative.com
News mentions
11
See all →

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