CVE-2025-47399 is a classic buffer overflow vulnerability (CWE-120) identified in Qualcomm Snapdragon chipsets, including models such as Cologne, FastConnect 7800, and various WSA and X-series components. The flaw occurs during the processing of IOCTL calls intended to update sensor property settings, where the input parameters are not properly checked for size, leading to memory corruption. This vulnerability can be triggered by a local attacker with limited privileges (PR:L) without requiring user interaction (UI:N). The improper bounds checking allows an attacker to overwrite memory regions, potentially leading to arbitrary code execution, privilege escalation, or system crashes. The vulnerability affects confidentiality, integrity, and availability, as indicated by the CVSS vector (C:H/I:H/A:H). Although no known exploits have been reported in the wild, the vulnerability's nature and impact make it a critical concern for devices relying on affected Snapdragon chipsets. The vulnerability was reserved in May 2025 and published in February 2026, with no patches currently linked, indicating that mitigation efforts should be prioritized once vendor updates are released.

For European organizations, this vulnerability poses significant risks, especially those relying on mobile devices, embedded systems, or IoT devices powered by affected Qualcomm Snapdragon chipsets. Exploitation could allow attackers to gain elevated privileges, execute arbitrary code, or cause denial of service, compromising sensitive data and disrupting critical operations. Sectors such as telecommunications, finance, healthcare, and manufacturing, which heavily depend on mobile and IoT technologies, could face operational and reputational damage. The local attack vector means that attackers need some level of access to the device, which could be achieved through physical access or by compromising less privileged user accounts. The high impact on confidentiality, integrity, and availability underscores the potential for severe breaches and system failures. Additionally, the widespread use of Snapdragon chipsets in consumer and enterprise devices across Europe increases the attack surface, making this a pressing security concern.

1. Monitor Qualcomm's official channels for patches addressing CVE-2025-47399 and apply them promptly once available. 2. Restrict access to IOCTL interfaces related to sensor property settings by enforcing strict access controls and limiting permissions to trusted processes only. 3. Employ runtime security mechanisms such as stack canaries, address space layout randomization (ASLR), and control-flow integrity (CFI) to mitigate exploitation risks. 4. Conduct thorough security audits and code reviews of custom drivers or software interacting with affected chipsets to identify and remediate unsafe input handling. 5. Implement endpoint detection and response (EDR) solutions capable of detecting anomalous behavior indicative of exploitation attempts. 6. Educate users and administrators about the risks of local privilege escalation vulnerabilities and enforce strong physical security controls to prevent unauthorized device access. 7. For organizations deploying IoT devices, ensure firmware integrity verification and secure update mechanisms are in place to facilitate timely patching.