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CVE-2026-47653 is a Microsoft Remote Desktop Client remote code execution vulnerability. The issue is described by Microsoft as a heap-based buffer overflow / memory-corruption condition and is mapped in the provided sources to CWE-416. Exploitation occurs on the client side when a user using a vulnerable Remote Desktop Client connects to an attacker-controlled or otherwise malicious RDP server. A malicious server can return specially crafted protocol responses that trigger the heap memory corruption condition in the client, leading to arbitrary code execution in the context of the logged-on user.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Remote Desktop Client remote code execution vulnerability triggered when a victim connects to an attacker-controlled server, leading to a heap-based buffer overflow.
A heap-based buffer overflow in Microsoft Remote Desktop Client that allows unauthorized remote code execution over a network.
A remote code execution vulnerability in Microsoft Remote Desktop Client caused by memory corruption, described as a heap-based buffer overflow/use-after-free condition, which can be triggered when a user connects to a malicious RDP server.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.