VulnSocial

CVE-2026-42909Patch(microsoft / remote_desktop_client)

LOWCVSS 7.5 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch microsoft remote_desktop_client systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

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

microsoft CVEsBack to dashboard
1.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-362CWE-416CWE-787

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • remote_desktop_client
  • windows_10_1607
  • windows_10_1809
  • windows_10_21h2

Threat summary

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • 1 total mentions across 1 day

Affected systems

Vendors
microsoft
Products
remote_desktop_clientwindows_10_1607windows_10_1809windows_10_21h2windows_10_22h2windows_11_23h2windows_11_24h2windows_11_25h2windows_11_26h1windows_app

2 versions affected across 15 products

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-06-10: 1Patch / Workaround · 2026-06-10: 1Technical Details · 2026-06-10: 106-10
Signal classification1 categories
Patch
1100.0%
Referenced assets1 URL
Full discourse1 post
  • WindowsForum@windowsforum
    Patch

    🪟 CVE-2026-42909 RDP Client RCE = your “trusted” server just turned into the attacker’s playground. Patch quick, and don’t let random admin boxes talk outbound. #Windows #Microsoft https://windowsforum.com/threads/cve-2026-42909-rdp-client-rce-patch-and-lock-down-outbound-admin-connections.424807/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #RemoteDesktop #WindowsSecurity #Cve202642909 #RdpClientRisk https://t.co/SFMsDO1Se5

    Post summary

    The tweet warns about CVE‑2026‑42909, an RDP Client RCE, and urges users to patch immediately and restrict outbound admin traffic.

    0000046
    1.2K followersView on X
CPE platform detail26 entries

26 of 26 entries

PartVendorProductVersionTarget SWTarget HW
Appmicrosoftremote_desktop_client-windows-
OSmicrosoftwindows_10_1607--x64
OSmicrosoftwindows_10_1607--x86
OSmicrosoftwindows_10_1809--x64
OSmicrosoftwindows_10_1809--x86
OSmicrosoftwindows_10_21h2--arm64
OSmicrosoftwindows_10_21h2--x64
OSmicrosoftwindows_10_21h2--x86
OSmicrosoftwindows_10_22h2--arm64
OSmicrosoftwindows_10_22h2--x64
OSmicrosoftwindows_10_22h2--x86
OSmicrosoftwindows_11_23h2--arm64
OSmicrosoftwindows_11_23h2--x64
OSmicrosoftwindows_11_24h2--arm64
OSmicrosoftwindows_11_24h2--x64
OSmicrosoftwindows_11_25h2--arm64
OSmicrosoftwindows_11_25h2--x64
OSmicrosoftwindows_11_26h1--arm64
OSmicrosoftwindows_11_26h1--x64
Appmicrosoftwindows_app-windows-
OSmicrosoftwindows_server_2012---
OSmicrosoftwindows_server_2012r2--
OSmicrosoftwindows_server_2016---
OSmicrosoftwindows_server_2019---
OSmicrosoftwindows_server_2022---
OSmicrosoftwindows_server_2025--x64

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