CVE-2025-32732 is a buffer overflow vulnerability identified in Intel(R) QuickAssist Technology (QAT) Windows software prior to version 2.6.0. Intel QAT is a hardware acceleration technology designed to offload cryptographic and compression workloads, enhancing performance in data centers and enterprise environments. The vulnerability exists within the user-space (Ring 3) components of the software stack, allowing a local attacker with authenticated access and low privileges to trigger a denial of service (DoS) condition. The buffer overflow can be exploited with low complexity and does not require user interaction or special internal knowledge, making it accessible to a wide range of local threat actors. The attack vector is local access, meaning the attacker must have some level of authenticated access to the affected system. The vulnerability primarily impacts system availability by causing crashes or service interruptions, with only minor potential impacts on confidentiality and integrity. The CVSS 4.0 base score is 5.8, reflecting medium severity due to the local attack vector and the requirement for authenticated privileges, but with high impact on availability. No public exploits have been reported to date, but the vulnerability could disrupt cryptographic operations and related services that rely on Intel QAT acceleration, potentially affecting critical infrastructure and enterprise applications.

For European organizations, the primary impact of CVE-2025-32732 is the potential denial of service on systems utilizing Intel QAT Windows software. This can lead to interruptions in cryptographic processing, data compression, and other accelerated workloads, potentially degrading performance and availability of critical applications such as secure communications, VPNs, and data center services. While confidentiality and integrity impacts are low, the availability disruption could affect business continuity, especially in sectors relying heavily on hardware acceleration for security and performance, including finance, telecommunications, and government agencies. The localized nature of the attack limits remote exploitation but insider threats or compromised user accounts could leverage this vulnerability. Organizations with extensive deployment of Intel QAT hardware in Windows environments may experience operational disruptions, increased downtime, and potential cascading effects on dependent services.

To mitigate CVE-2025-32732, European organizations should promptly update Intel QAT Windows software to version 2.6.0 or later, where the buffer overflow has been addressed. Until patches are applied, restrict local access to systems running vulnerable versions by enforcing strict access controls and monitoring for unauthorized logins. Implement robust user authentication and privilege management to minimize the risk of low-privilege users exploiting the vulnerability. Employ endpoint detection and response (EDR) solutions to detect anomalous behavior indicative of exploitation attempts. Regularly audit and review system logs for signs of crashes or service interruptions related to QAT components. Additionally, consider isolating critical systems using Intel QAT from general user environments to reduce exposure. Coordinate with Intel for any additional security advisories or updates related to QAT software.