Integer Overflow Vulnerability in Remote Desktop Client by Microsoft
CVE-2026-58594

8.8HIGH

Key Information:

Vendor

Microsoft
Status
Windows 10 Version 1607
Windows 10 Version 1809
Windows 10 Version 21h2
Windows 10 Version 22h2
Vendor
CVE Published:
14 July 2026

What is CVE-2026-58594?

An integer overflow vulnerability in Microsoft Remote Desktop Client can allow an unauthorized attacker to execute arbitrary code over a network. This vulnerability arises from improper handling of numeric values, facilitating exploitation by malicious actors. Applying security patches is essential to mitigate risks associated with this vulnerability. For more details, refer to the official vendor advisory.

Affected Version(s)

Windows 10 Version 1607 32-bit Systems 10.0.14393.0 < 10.0.14393.9339

Windows 10 Version 1809 32-bit Systems 10.0.17763.0 < 10.0.17763.9020

Windows 10 Version 21H2 32-bit Systems 10.0.19044.0 < 10.0.19044.7548

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.