MSRC-CVE-2026-57098 — Microsoft Remote Desktop App for Windows Information Disclosure Vulnerability

Summary

Impact: Information Disclosure. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.

Details

What type of information could be disclosed by this vulnerability?
An attacker who successfully exploited this vulnerability could potentially read small portions of heap memory.

Security updates
1.2.7279.0 — https://docs.microsoft.com/en-us/windows-server/remote/remote-desktop-services/clients/windowsdesktop-whatsnew

Vulnerabilities 1

High 7.5

CVE-2026-57098

Microsoft Remote Desktop App for Windows Information Disclosure Vulnerability

Improper verification of cryptographic signature in Windows RDP Client allows an unauthorized attacker to disclose information over a network.

Microsoft Remote Desktop client for Windows Desktop Windows

Sep 8, 2026

Revision history

2026-09-08 #1
Information published.

References

CVE-2026-57098 Microsoft Remote Desktop App for Windows Information Disclosure Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57098
Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
Common Vulnerability Scoring System
https://www.first.org/cvss