CVE-2025-20087 is a vulnerability identified in the Intel oneAPI DPC++/C++ Compiler software installers, where incorrect default permissions on installer files or directories allow an authenticated user with limited privileges to escalate their privileges on the local system. The issue arises because the installer sets permissions that are too permissive, enabling a local user to modify or replace components that run with elevated privileges. This can lead to unauthorized code execution or modification of system settings, compromising system integrity and confidentiality. The vulnerability requires local access and user interaction, with a high attack complexity, meaning an attacker must have some knowledge and ability to interact with the system. The CVSS 4.0 base score is 5.4 (medium severity), reflecting the moderate risk due to the need for prior authentication and user interaction, but with significant impact if exploited. No known exploits are currently reported in the wild, but the vulnerability remains a concern for environments where Intel oneAPI tools are deployed. The affected versions are not explicitly listed but are referenced in Intel advisories. This vulnerability highlights the risks associated with improper permission settings in software installers, especially for development tools that may be widely used in enterprise and research environments.

The primary impact of CVE-2025-20087 is local privilege escalation, which can allow an authenticated user with limited rights to gain higher privileges, potentially administrative or system-level. This can lead to unauthorized modification of system files, installation of persistent malware, or disruption of system operations. For organizations, this means that insider threats or compromised low-privilege accounts could leverage this vulnerability to gain control over critical systems. The confidentiality of sensitive data could be compromised, integrity of software and configurations altered, and availability affected if system stability is undermined. Since Intel oneAPI tools are used globally in software development, high-performance computing, and AI research, exploitation could impact intellectual property protection and operational security. The lack of known exploits reduces immediate risk, but the vulnerability remains a significant concern for environments with multiple users or shared development machines.

Organizations should monitor Intel’s official advisories and apply patches or updated installers as soon as they become available to correct the permission settings. Until patches are released, restrict access to the installer files and directories to trusted administrators only, using strict access control lists (ACLs). Implement the principle of least privilege for all users, ensuring that only necessary personnel have access to development environments. Employ endpoint detection and response (EDR) solutions to monitor for suspicious local privilege escalation attempts. Regularly audit file and directory permissions on development machines to detect and remediate overly permissive settings. Consider isolating build and development environments to minimize the risk of lateral movement if a local user is compromised. Educate users about the risks of executing untrusted installers and the importance of reporting unusual system behavior promptly.