CVE-2026-56647

HIGH

Windows Remote Access Service Infrastructure Elevation of Privilege Vulnerability

Title source: cna
STIX 2.1

Description

Integer overflow or wraparound in Windows Remote Access Service Infrastructure allows an authorized attacker to elevate privileges over a network.

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory patch
Windows Remote Access Service Infrastructure Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56647

Scores

CVSS v3 8.8
EPSS 0.0085
EPSS Percentile 54.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-190
Status published
Products (30)
Microsoft/Windows 10 Version 1607 10.0.14393.0 - 10.0.14393.9339
Microsoft/Windows 10 Version 1809 10.0.17763.0 - 10.0.17763.9020
Microsoft/Windows 10 Version 21H2 10.0.19044.0 - 10.0.19044.7548
Microsoft/Windows 10 Version 22H2 10.0.19045.0 - 10.0.19045.7548
Microsoft/Windows 11 Version 24H2 10.0.26100.0 - 10.0.26100.8875
Microsoft/Windows 11 Version 25H2 10.0.26200.0 - 10.0.26100.8875
Microsoft/Windows 11 Version 25H2 10.0.26200.0 - 10.0.26200.8875
Microsoft/Windows 11 version 26H1 10.0.28000.0 - 10.0.28000.2525
Microsoft/Windows Server 2012 R2 6.3.9600.0 - 6.3.9600.23291
Microsoft/Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 - 6.3.9600.23291
... and 20 more
Published Jul 14, 2026
Tracked Since Jul 14, 2026