VDB

CVE-2026-42909

CVE-2026-42909 PUBLISHED CVSS 7.5 HIGH

Reported by microsoft · Published June 9, 2026

Concurrent execution using shared resource with improper synchronization ('race condition') in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

Risk Scores

CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Affected Products

VendorProductVersions
MicrosoftRemote Desktop client for Windows Desktop1.2.0.0
MicrosoftWindows 10 Version 160710.0.14393.0
MicrosoftWindows 10 Version 180910.0.17763.0
MicrosoftWindows 10 Version 21H210.0.19044.0
MicrosoftWindows 10 Version 22H210.0.19045.0
MicrosoftWindows 11 version 23H210.0.22631.0
MicrosoftWindows 11 Version 23H210.0.22631.0
MicrosoftWindows 11 Version 24H210.0.26100.0
MicrosoftWindows 11 Version 25H210.0.26200.0
MicrosoftWindows 11 version 26H110.0.28000.0
MicrosoftWindows App Client for Windows Desktop1.00
MicrosoftWindows Server 20126.2.9200.0
MicrosoftWindows Server 2012 (Server Core installation)6.2.9200.0
MicrosoftWindows Server 2012 R26.3.9600.0
MicrosoftWindows Server 2012 R2 (Server Core installation)6.3.9600.0
MicrosoftWindows Server 201610.0.14393.0
MicrosoftWindows Server 2016 (Server Core installation)10.0.14393.0
MicrosoftWindows Server 201910.0.17763.0
MicrosoftWindows Server 2019 (Server Core installation)10.0.17763.0
MicrosoftWindows Server 202210.0.20348.0

…and 40 more

Timeline

  • Jun 9, 2026 CVE Published
  • Jun 10, 2026 Coalition ESS Score
  • Jun 10, 2026 Security Advisory
  • Jun 10, 2026 Security Advisory

References

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