PT-2026-47888 · Unknown+1 · Remote Desktop Client+1

Published 2026-06-09 · Updated 2026-06-10 · CVE-2026-42909

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Remote Desktop Client (affected versions not specified)

Description A heap-based buffer overflow in the Remote Desktop Client allows an unauthorized attacker to execute code over a network. A heap-based buffer overflow occurs when a program writes more data to a heap-allocated memory block than it can hold, potentially corrupting adjacent memory.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Use After Free

Race Condition

Weakness Enumeration

CWE-416

CWE-362

Related Identifiers

CVE-2026-42909

Affected Products

Remote Desktop Client

Windows

References · 5

• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-42909 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42909 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-42909 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-42909 · Security Note
• https://twitter.com/windowsforum/status/2064534766053949445 · Twitter Post