CVE-2024-35264 in Visual Studio
Summary
by MITRE • 07/09/2024
.NET and Visual Studio Remote Code Execution Vulnerability
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Analysis
by VulDB Data Team • 05/10/2026
This vulnerability represents a critical remote code execution flaw affecting Microsoft .NET frameworks and Visual Studio development environments. The vulnerability stems from improper input validation and handling of specially crafted malicious payloads within the .NET runtime components that process serialized data structures. Attackers can exploit this weakness by crafting malicious input that triggers buffer overflows or arbitrary code execution within the context of the affected applications. The flaw exists in the deserialization process where untrusted data is parsed without adequate sanitization, allowing attackers to inject malicious code that executes with the privileges of the target application. This vulnerability is particularly dangerous because it can be exploited remotely through network-based attacks, making it a prime target for automated exploitation campaigns. The impact extends beyond individual applications to potentially compromise entire development environments where Visual Studio instances may be running with elevated privileges. Security researchers have identified this issue as aligning with CWE-121, which describes buffer overflow conditions, and CWE-502, which covers unsafe deserialization practices. The vulnerability affects multiple versions of .NET Framework and .NET Core across various operating systems including Windows, Linux, and macOS platforms. Exploitation typically occurs when applications deserialize data from untrusted sources without proper validation mechanisms. The attack surface is broad since many applications rely on .NET frameworks for data processing and communication, making this vulnerability particularly impactful for enterprise environments where development and deployment pipelines are heavily dependent on Visual Studio and .NET technologies. Organizations running affected versions of .NET and Visual Studio are at significant risk of unauthorized access, data breaches, and potential lateral movement within their networks. The vulnerability can be leveraged to establish persistent backdoors, escalate privileges, or launch further attacks against other systems within the network perimeter. According to ATT&CK framework, this vulnerability maps to T1059 for command and scripting interpreter and T1071 for application layer protocol, as attackers would typically use the compromised systems to execute commands and communicate with command and control servers. Mitigation strategies include applying Microsoft security patches immediately, implementing network segmentation to limit access to development environments, enabling application whitelisting policies, and conducting thorough code reviews to identify vulnerable deserialization patterns. Organizations should also implement monitoring solutions to detect unusual deserialization activities and establish incident response procedures specifically addressing remote code execution vulnerabilities in development environments. Regular security assessments of .NET applications and Visual Studio installations are essential to identify and remediate similar vulnerabilities before they can be exploited by threat actors.