Loading vulnerability…
CVE-2026-47289 is a critical heap-based buffer overflow vulnerability in Microsoft Remote Desktop Client. The flaw is triggered when the client processes a specially crafted Remote Desktop Protocol certificate presented by a malicious or attacker-controlled RDP server during connection establishment. Successful exploitation can corrupt heap memory and lead to arbitrary code execution on the victim system in the context of the Remote Desktop client process. Microsoft assessed the issue as remotely exploitable over the network with low attack complexity, requiring no prior privileges but requiring user interaction to initiate a connection to the malicious server.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
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.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A memory corruption vulnerability affecting remote work scenarios, triggered when a workstation connects to a rogue server presenting a malformed certificate.
A critical heap-based buffer overflow remote code execution vulnerability in Windows Remote Desktop Client triggered by connecting to a malicious RDP server.
A critical remote code execution vulnerability in Windows Remote Desktop Client caused by a heap-based buffer overflow.
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.
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.