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CVE-2026-42904

Windows TCP/IP Elevation of Privilege Vulnerability

Published: Jun 9, 2026Updated: Jun 11, 2026 Sources: CVE List NVD
9.6CVSS
CRITICAL

Heap-based buffer overflow in Windows TCP/IP allows an unauthorized attacker to elevate privileges over an adjacent network.

EPSS Score
0.1%
Top 71.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

CVSS Vector Breakdown

AV:AAC:LPR:NUI:NS:CC:HI:HA:H
Exploitability
AV:AAttack Vector
Adjacent
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High

Weaknesses

Affected Products

Windows 10 Version 21H2
Microsoft
Operating Systems / windows
Windows 10 Version 22H2
Microsoft
Operating Systems / windows
Windows 11 version 23H2
Microsoft
Operating Systems / windows
Windows 11 Version 23H2
Microsoft
Operating Systems / windows
Windows 11 Version 24H2
Microsoft
Operating Systems / windows
and 13 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

Timeline

Published
Jun 9, 2026
Last Updated
Jun 11, 2026
3

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