CVE-2021-38666
HighCVSS 8.8Exploitation Probability (EPSS)
Very high risk96th percentile - higher than 96% of all known CVEs
Summary
Remote Code Execution vulnerability in Remote Desktop Client. Details are not provided in the description.
Risk Assessment
No details, but an RCE in the RDP client could allow an attacker to execute code on the user's machine.
Recommendation
Install the latest security updates for Remote Desktop Client.
Other vulnerabilities in Remote Desktop Client
See all- CVE-2026-54990Critical
A heap-based buffer overflow in the Remote Desktop Client allows an unauthorized attacker to execute code over a network.
- CVE-2021-34535High
Remote code execution vulnerability in Remote Desktop Client. An attacker could exploit this to execute code remotely on the client machine.
- CVE-2026-83998High
Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
- CVE-2026-80077High
Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
- CVE-2026-80074High
Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
- CVE-2026-78463High
Improper control of generation of code ('code injection') in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
- CVE-2026-77896Medium
Integer overflow or wraparound in Remote Desktop Client allows an unauthenticated attacker to perform a denial of service attack over a network.
- CVE-2026-69485High
Use of uninitialized resource in Remote Desktop Client allows an authorized attacker to execute code over a network.
- CVE-2026-69358High
Use of uninitialized resource in Remote Desktop Client allows an authorized attacker to execute code over a network.
- CVE-2026-69317Medium
An out-of-bounds read in the Remote Desktop Client allows an authorized attacker to disclose information over a network.
Original NVD description (English source)
Remote Desktop Client Remote Code Execution Vulnerability
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

