CVE-2025-29802 in Visual Studio
Summary
by MITRE • 04/08/2025
Improper access control in Visual Studio allows an authorized attacker to elevate privileges locally.
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Analysis
by VulDB Data Team • 07/13/2026
This vulnerability represents a critical improper access control flaw within Microsoft Visual Studio that enables authenticated attackers to escalate their privileges locally on affected systems. The issue stems from insufficient authorization checks and privilege validation mechanisms within the development environment's security architecture, allowing malicious users who already possess legitimate credentials to bypass normal access restrictions and gain elevated system permissions. The vulnerability specifically affects the local privilege escalation capabilities of Visual Studio, creating a dangerous attack vector where authorized users can potentially elevate their privileges beyond what is normally permitted.
The technical implementation of this flaw involves weaknesses in the application's privilege management systems and user authentication processes. Attackers can exploit this issue by leveraging their existing legitimate access to Visual Studio to manipulate system-level operations that should require administrator or elevated permissions. This typically occurs through manipulation of process execution contexts, registry modifications, or direct system call bypasses within the integrated development environment's runtime environment. The vulnerability aligns with CWE-284 which specifically addresses improper access control issues in software systems.
From an operational impact perspective, this vulnerability creates significant security risks for development environments and organizations that rely heavily on Visual Studio for software development activities. Authorized attackers who compromise developer workstations can use this privilege escalation capability to gain full system control, potentially accessing sensitive source code repositories, modifying build processes, or establishing persistent access points within the network infrastructure. The impact extends beyond individual machines to potentially compromise entire development ecosystems where multiple developers share common development environments and resources.
Organizations should implement immediate mitigations including restricting Visual Studio installation and execution privileges to only necessary personnel, implementing strict user account controls, and ensuring regular security updates are applied to Visual Studio installations. Additionally, organizations should consider deploying application whitelisting solutions that prevent unauthorized modifications to the Visual Studio environment and its associated processes. The mitigation strategies should align with ATT&CK technique T1068 which covers privilege escalation tactics and should include monitoring for suspicious process execution patterns and unusual system modifications that might indicate exploitation attempts.
Security teams must also conduct comprehensive vulnerability assessments of their development environments to identify other potential access control weaknesses that could compound this issue, including reviewing network segmentation policies and ensuring proper isolation between development and production environments. Regular security training for developers on recognizing social engineering attacks that could lead to credential compromise is essential since the vulnerability requires initial authenticated access before privilege escalation can occur. The remediation process should include implementing multi-factor authentication for administrative Visual Studio access and establishing strict audit logging of all elevated privilege operations within the development environment.