CVE-2025-47355 is a critical memory corruption vulnerability classified under CWE-787 (Out-of-bounds Write) affecting multiple Qualcomm Snapdragon and FastConnect platforms. The flaw occurs during the handling of remote procedure IOCTL (Input/Output Control) calls, where improper bounds checking leads to out-of-bounds memory writes. This can corrupt memory, potentially allowing an attacker to execute arbitrary code with elevated privileges or cause a denial-of-service condition by crashing affected components. The affected products include a wide range of Qualcomm chips such as FastConnect 6700, 6900, 7800, Snapdragon 7c+ Gen 3 Compute, Snapdragon 8cx Gen 3 Compute, and various WCD and WCN wireless connectivity modules. These components are embedded in numerous mobile devices, laptops, and IoT devices globally. The vulnerability requires local privileges (PR:L) but no user interaction (UI:N), and has low attack complexity (AC:L), making it feasible for attackers who have gained limited access to escalate privileges or disrupt device operations. The vulnerability impacts confidentiality, integrity, and availability (all rated high in the CVSS vector), highlighting its severity. Although no exploits are publicly known yet, the broad device coverage and potential impact necessitate immediate mitigation efforts. Qualcomm has not yet released patches, so organizations must monitor for updates and apply them promptly once available.

For European organizations, this vulnerability poses significant risks due to the widespread use of Qualcomm Snapdragon-based devices in enterprise laptops, mobile phones, and IoT infrastructure. Successful exploitation could lead to unauthorized code execution, enabling attackers to steal sensitive data, install persistent malware, or disrupt critical services. This is particularly concerning for sectors reliant on mobile computing and wireless connectivity, such as finance, healthcare, and manufacturing. The high impact on confidentiality, integrity, and availability means that data breaches, operational downtime, and loss of trust could result. Additionally, the requirement for local privileges means that initial compromise vectors such as phishing or insider threats could be leveraged to exploit this vulnerability further. The absence of known exploits currently provides a window for proactive defense, but the vulnerability’s characteristics suggest it could be weaponized rapidly once exploit code is developed.

1. Monitor Qualcomm and device vendor advisories closely for official patches addressing CVE-2025-47355 and apply them immediately upon release. 2. Restrict access to IOCTL interfaces on affected devices by enforcing strict user privilege separation and limiting local user accounts to the minimum necessary permissions. 3. Employ endpoint detection and response (EDR) tools to monitor for unusual IOCTL calls or memory corruption indicators. 4. Harden device configurations by disabling unnecessary services and interfaces that could be used to invoke vulnerable IOCTL calls. 5. Conduct regular security audits and penetration testing focusing on local privilege escalation vectors. 6. Educate users and administrators about the risks of local privilege escalation and enforce strong authentication and access controls to reduce the likelihood of initial compromise. 7. For organizations deploying IoT or embedded devices with affected Qualcomm components, implement network segmentation and strict firewall rules to limit lateral movement in case of exploitation.