CVE-2025-48817: Remote Desktop Client Remote Code Execution Vulnerability

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-07-08 · updated 2026-06-17
Weakness: CWE-23

Description

Relative path traversal in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

Affected products

Microsoft Remote Desktop client for Windows Desktop: before 1.2.6353 — fixed in 1.2.6353
Microsoft Windows 10 Version 1507: before 10.0.10240.21073 — fixed in 10.0.10240.21073
Microsoft Windows 10 1607: before 10.0.14393.8246 — fixed in 10.0.14393.8246
Microsoft Windows 10: before 10.0.17763.7558 — fixed in 10.0.17763.7558
Microsoft Windows 10: before 10.0.19044.6093 — fixed in 10.0.19044.6093
Microsoft Windows 10: before 10.0.19045.6093 — fixed in 10.0.19045.6093
Microsoft Windows 11: before 10.0.22621.5624 — fixed in 10.0.22621.5624
Microsoft Windows 11: before 10.0.22631.5624 — fixed in 10.0.22631.5624
Microsoft Windows 11: before 10.0.26100.4652 — fixed in 10.0.26100.4652
Microsoft Windows App Client for Windows Desktop: before 2.0.559.0 — fixed in 2.0.559.0
Microsoft Windows Server 2008: r2-sp1
Microsoft Windows Server 2012: r2
Microsoft Windows Server 2016: before 10.0.14393.8246 — fixed in 10.0.14393.8246
Microsoft Windows Server 2019: before 10.0.17763.7558 — fixed in 10.0.17763.7558
Microsoft Windows Server 2022: before 10.0.20348.3932 — fixed in 10.0.20348.3932
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation): before 10.0.25398.1732 — fixed in 10.0.25398.1732
Microsoft Windows Server 2025: before 10.0.26100.4652 — fixed in 10.0.26100.4652
Microsoft Remote Desktop client for Windows Desktop: from 1.2.0.0 before 1.2.6353.0 — fixed in 1.2.6353.0
Microsoft Windows 10 Version 1507: from 10.0.10240.0 before 10.0.10240.21073 — fixed in 10.0.10240.21073
Microsoft Windows 10 1607: from 10.0.14393.0 before 10.0.14393.8246 — fixed in 10.0.14393.8246
Microsoft Windows 10: from 10.0.17763.0 before 10.0.17763.7558 — fixed in 10.0.17763.7558
Microsoft Windows 10: from 10.0.19044.0 before 10.0.19044.6093 — fixed in 10.0.19044.6093
Microsoft Windows 10: from 10.0.19045.0 before 10.0.19045.6093 — fixed in 10.0.19045.6093
Microsoft Windows 11: from 10.0.22621.0 before 10.0.22621.5624 — fixed in 10.0.22621.5624
Microsoft Windows 11 version 22H3: from 10.0.22631.0 before 10.0.22631.5624 — fixed in 10.0.22631.5624
Microsoft Windows 11: from 10.0.22631.0 before 10.0.22631.5624 — fixed in 10.0.22631.5624
Microsoft Windows 11: from 10.0.26100.0 before 10.0.26100.4652 — fixed in 10.0.26100.4652
Microsoft Windows App Client for Windows Desktop: from 1.00 before 2.0.559.0 — fixed in 2.0.559.0
Microsoft Windows Server 2008 R2 Service Pack 1: from 6.1.7601.0 before 6.1.7601.27820 — fixed in 6.1.7601.27820
Microsoft Windows Server 2008 Service Pack 2: from 6.0.6003.0 before 6.0.6003.23418 — fixed in 6.0.6003.23418

How to fix

Upgrade to a fixed version: Microsoft Remote Desktop client for Windows Desktop 1.2.6353; Microsoft Windows 10 Version 1507 10.0.10240.21073; Microsoft Windows 10 1607 10.0.14393.8246; Microsoft Windows 10 10.0.17763.7558; Microsoft Windows 10 10.0.19044.6093; Microsoft Windows 10 10.0.19045.6093; Microsoft Windows 11 10.0.22621.5624; Microsoft Windows 11 10.0.22631.5624; Microsoft Windows 11 10.0.26100.4652; Microsoft Windows App Client for Windows Desktop 2.0.559.0; Microsoft Windows Server 2016 10.0.14393.8246; Microsoft Windows Server 2019 10.0.17763.7558. Check the vendor advisory for mitigations.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-48817

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