CVE-2025-26645Network attack vector

Remote code execution via relative path traversal

Published Mar 11, 2025 · Updated Feb 13, 2026

Relative path traversal in Microsoft Remote Desktop Client allows remote attackers to execute code after a user connects to a malicious server. Microsoft has not disclosed which client routine accepts the relative path or how traversal escapes its intended directory. Exploitation requires user interaction with an attacker-controlled RDP endpoint; successful exploitation runs code on the client.

CVSS severityUnavailable
Unscored
EPSS probability3.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Relative path traversal in Microsoft Remote Desktop Client allows remote attackers to execute code after a user connects to a malicious server. Microsoft has not disclosed which client routine accepts the relative path or how traversal escapes its intended directory. Exploitation requires user interaction with an attacker-controlled RDP endpoint; successful exploitation runs code on the client.

The record

CVE
CVE-2025-26645
Published
Mar 11, 2025
Updated
Feb 13, 2026
Vendor
Microsoft
Product
Windows 10 Version 1507
Classifications
CWE-284, CWE-23, T1204
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0.10240.0 <10.0.10240.20947

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Windows 10 Version 1507version=10.0.10240.0 <10.0.10240.20947
Microsoft · Windows Server 2019version=10.0.17763.0 <10.0.17763.7009
Microsoft · Windows Server 2025 (Server Core installation)version=10.0.26100.0 <10.0.26100.3476
Microsoft · Windows Server 2016 (Server Core installation)version=10.0.14393.0 <10.0.14393.7876
Microsoft · Windows 11, version 24H2version=10.0.26100.0 <10.0.26100.3476
Microsoft · Windows Server 2012 (Server Core installation)version=6.2.9200.0 <6.2.9200.25368
Microsoft · Windows Server 2012version=6.2.9200.0 <6.2.9200.25368
Microsoft · Windows 10 Version 21H2version=10.0.19044.0 <10.0.19044.5608
Microsoft · Windows Server 2022, 23H2 Edition (Server Core installation)version=10.0.25398.0 <10.0.25398.1486
Microsoft · Windows Server 2016version=10.0.14393.0 <10.0.14393.7876
Microsoft · Windows 11 Version 22H3version=10.0.22631.0 <10.0.22631.5039
Microsoft · Windows App Client for Windows Desktopversion=1.00 <2.0.365.0
Microsoft · Windows Server 2008 R2 Service Pack 1version=6.1.7601.0 <6.1.7601.27618
Microsoft · Windows Server 2008 R2 Service Pack 1 (Server Core installation)version=6.1.7601.0 <6.1.7601.27618
Microsoft · Windows 10 Version 22H2version=10.0.19045.0 <10.0.19045.5608
Microsoft · Windows Server 2012 R2 (Server Core installation)version=6.3.9600.0 <6.3.9600.22470
Microsoft · Windows Server 2019 (Server Core installation)version=10.0.17763.0 <10.0.17763.7009
Microsoft · Windows 11 Version 23H2version=10.0.22631.0 <10.0.22631.5039
Microsoft · Windows 11, version 22H2version=10.0.22621.0 <10.0.22621.5039
Microsoft · Windows 10 Version 1607version=10.0.14393.0 <10.0.14393.7876
Microsoft · Windows Server 2008 Service Pack 2version=6.0.6003.0 <6.0.6003.23168
Microsoft · Windows Server 2022version=10.0.20348.0 <10.0.20348.3328
Microsoft · Windows Server 2025version=10.0.26100.0 <10.0.26100.3476
Microsoft · Windows 10 Version 1809version=10.0.17763.0 <10.0.17763.7009
Microsoft · Windows Server 2012 R2version=6.3.9600.0 <6.3.9600.22470
Microsoft · Windows Server 2008 Service Pack 2 (Server Core installation)version=6.0.6003.0 <6.0.6003.23168
Microsoft · Remote Desktop client for Windows Desktopversion=1.2.0.0 <1.2.6017.0

Published CVSS scores

8.8MicrosoftCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
CWE-23Relative Path Traversal
T1204User Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo