CVE-2025-20099 is a vulnerability identified in the Intel(R) Rapid Storage Technology (RST) installation software that allows an authenticated local user to escalate their privileges due to improper access control mechanisms within the installation process. Intel RST is widely used for managing storage devices, including RAID configurations, on many Intel-based systems. The vulnerability arises because the installation software does not adequately restrict access to certain privileged operations, enabling a user with limited privileges (low-level authenticated user) to potentially gain higher system privileges. The CVSS 4.0 base score is 5.4, reflecting a medium severity level. The vector indicates that exploitation requires local access (AV:L), high attack complexity (AC:H), privileges at a low level (PR:L), and user interaction (UI:A). The impact on confidentiality, integrity, and availability is high (VC:H, VI:H, VA:H), meaning successful exploitation could lead to significant compromise of system security. No known exploits have been reported in the wild as of the publication date. The vulnerability does not involve network attack vectors and is limited to local authenticated users, which reduces the attack surface but still poses a risk in environments where multiple users share systems or where local access can be obtained by attackers. The lack of publicly available patches at the time of reporting necessitates proactive mitigation steps. This vulnerability is relevant for all versions of Intel RST installation software referenced by Intel, affecting a broad range of Intel-based systems globally, including desktops, laptops, and servers that utilize Intel RST for storage management.

The potential impact of CVE-2025-20099 is significant for organizations that deploy Intel Rapid Storage Technology on their systems. Successful exploitation allows an authenticated local user to escalate privileges, potentially gaining administrative or system-level access. This can lead to unauthorized access to sensitive data, modification or deletion of critical files, installation of persistent malware, and disruption of storage management functions. In multi-user environments such as enterprise workstations, shared servers, or virtualized systems, this vulnerability could enable insider threats or attackers who have gained limited local access to fully compromise affected systems. The high impact on confidentiality, integrity, and availability means that critical business operations relying on Intel RST-managed storage could be severely disrupted. Although exploitation requires local access and user interaction, the widespread use of Intel RST in corporate and consumer devices increases the attack surface. Organizations with stringent security requirements, such as financial institutions, government agencies, and critical infrastructure operators, face elevated risks. The absence of known exploits in the wild currently reduces immediate threat but does not eliminate the risk of future exploitation once details become more widely known.

1. Monitor Intel's official channels for patches or updates addressing CVE-2025-20099 and apply them promptly once available. 2. Restrict local user permissions to the minimum necessary, avoiding granting installation or administrative rights to standard users. 3. Implement strict access controls and user account management policies to limit the number of users with local authenticated access. 4. Employ endpoint detection and response (EDR) solutions to monitor for unusual privilege escalation attempts or suspicious activity related to Intel RST processes. 5. Conduct regular audits of installed software versions and configurations to identify systems running vulnerable versions of Intel RST installation software. 6. Use application whitelisting to prevent unauthorized execution of installation or system modification tools by non-privileged users. 7. Educate users about the risks of local privilege escalation and the importance of not executing untrusted software or installation packages. 8. In environments with shared or multi-user systems, consider isolating critical systems or using virtualization/containerization to reduce the impact of potential local exploits. 9. Review and harden system policies related to software installation and privilege elevation mechanisms to reduce attack vectors.