CVE-2025-27075 is a high-severity vulnerability identified in various Qualcomm Snapdragon platforms and associated components, specifically related to improper validation of array indices (CWE-129) during Bluetooth Host IOCTL command processing. The flaw arises when the Bluetooth Host component processes an IOCTL command containing a buffer larger than expected, leading to memory corruption. This memory corruption can result in arbitrary code execution, privilege escalation, or denial of service due to the overwriting of critical memory regions. The affected products include a broad range of Qualcomm Snapdragon chipsets and FastConnect subsystems, which are widely used in mobile devices, laptops, and IoT devices. The vulnerability requires local access with low privileges (PR:L) but does not require user interaction (UI:N), and the attack complexity is low (AC:L). The CVSS v3.1 score of 7.8 reflects the high impact on confidentiality, integrity, and availability, as exploitation could allow an attacker to execute arbitrary code with elevated privileges, potentially compromising the entire device. No known exploits are currently reported in the wild, and no patches have been linked yet, indicating that affected organizations should prioritize monitoring and mitigation efforts. The root cause is an improper validation of array indices when handling IOCTL commands, a common programming error that leads to buffer overflows or out-of-bounds memory access, which attackers can leverage to manipulate program control flow or corrupt data structures.

For European organizations, this vulnerability poses a significant risk, especially for enterprises relying on devices powered by Qualcomm Snapdragon chipsets, including smartphones, tablets, laptops, and embedded IoT systems. Exploitation could lead to unauthorized access to sensitive corporate data, disruption of critical communication channels via Bluetooth, and potential lateral movement within internal networks if compromised devices are used as entry points. Given the widespread use of Qualcomm Snapdragon in consumer and enterprise devices across Europe, the vulnerability could affect sectors such as finance, healthcare, manufacturing, and government agencies where device security is paramount. The local privilege requirement limits remote exploitation; however, insider threats or malware that gains local access could leverage this vulnerability to escalate privileges and compromise device integrity. The absence of user interaction lowers the barrier for automated exploitation once local access is obtained. Additionally, the potential for denial of service could disrupt business operations dependent on Bluetooth connectivity, such as wireless peripherals and IoT device management.

European organizations should implement a multi-layered mitigation strategy: 1) Inventory and identify all devices using the affected Qualcomm Snapdragon chipsets and FastConnect components to understand exposure. 2) Monitor vendor communications closely for official patches or firmware updates and prioritize their deployment as soon as available. 3) Restrict local access to devices by enforcing strict endpoint security policies, including limiting administrative privileges and using endpoint detection and response (EDR) tools to detect suspicious local activity. 4) Employ network segmentation to isolate critical systems and limit Bluetooth device usage in sensitive environments. 5) Disable or restrict Bluetooth functionality on devices where it is not essential to reduce the attack surface. 6) Implement application whitelisting and behavior monitoring to detect anomalous processes that might exploit this vulnerability. 7) Conduct user awareness training to prevent social engineering attacks that could lead to local access. 8) For organizations managing IoT devices, ensure secure provisioning and update mechanisms to facilitate timely patching. These steps go beyond generic advice by focusing on device-specific controls and operational practices tailored to the nature of this vulnerability.