CVE-2025-24519 is a buffer overflow vulnerability identified in Intel(R) QuickAssist Technology (QAT) Windows software versions prior to 2.6.0. The vulnerability exists within Ring 3 user applications, which operate in user mode, and allows an authenticated user with low privileges to escalate their privileges on the system. The flaw arises from improper handling of buffer boundaries, enabling an attacker to overwrite memory and manipulate data integrity. Exploitation requires local access and authenticated user privileges but no special internal knowledge or user interaction, indicating a low complexity attack vector. The vulnerability impacts the integrity of the system by allowing unauthorized data manipulation but does not compromise confidentiality or availability. The CVSS 4.0 base score is 6.8, reflecting a medium severity level, with attack vector local, attack complexity low, privileges required low, and no user interaction needed. No known exploits have been reported in the wild, but the vulnerability poses a risk especially in environments where Intel QAT is used for cryptographic acceleration and data processing tasks. The vulnerability could be leveraged by adversaries to gain elevated privileges and potentially manipulate sensitive data processed by QAT-enabled applications.

The primary impact of CVE-2025-24519 is on data integrity, as it allows an authenticated local user to escalate privileges and manipulate data processed by Intel QAT Windows software. This could lead to unauthorized modification of cryptographic operations or data acceleration processes, undermining trust in the affected systems. Although confidentiality and availability are not directly impacted, the integrity compromise could facilitate further attacks or data corruption. Organizations relying on Intel QAT for performance enhancements in security-sensitive environments, such as financial services, telecommunications, and government sectors, may face increased risk of insider threats or lateral movement by attackers. The medium severity rating suggests that while the vulnerability is not trivial, it requires local authenticated access, limiting remote exploitation but still posing a significant risk in multi-user or shared environments.

To mitigate CVE-2025-24519, organizations should promptly update Intel QAT Windows software to version 2.6.0 or later, where the buffer overflow vulnerability is addressed. Until patches are applied, restrict local access to systems running vulnerable QAT software to trusted users only, and implement strict access controls and monitoring to detect unusual privilege escalation attempts. Employ application whitelisting and endpoint detection and response (EDR) solutions to identify anomalous behavior related to QAT processes. Additionally, conduct regular audits of user privileges and system logs to detect early signs of exploitation. Where possible, isolate QAT-enabled systems from untrusted networks and users to reduce the attack surface. Finally, maintain an up-to-date inventory of systems running Intel QAT software to ensure comprehensive coverage of remediation efforts.