CVE-2025-47331 is a buffer over-read vulnerability classified under CWE-126 found in a wide array of Qualcomm Snapdragon platforms and associated chipsets. The vulnerability arises when the firmware improperly processes certain events, leading to reading beyond the intended buffer boundaries. This flaw can cause unauthorized disclosure of sensitive information residing in adjacent memory areas. The vulnerability requires local access with low privileges (AV:L, PR:L) and does not require user interaction (UI:N), which means an attacker must have some level of access to the device but does not need to trick a user. The scope is unchanged (S:U), indicating the impact is limited to the vulnerable component. The CVSS v3.1 score is 6.1 (medium severity), reflecting a high confidentiality impact but no integrity or availability impact. The affected products list is extensive, covering many Snapdragon mobile platforms (from Snapdragon 4 Gen 1 to Snapdragon 8+ Gen 2), FastConnect wireless subsystems, automotive platforms, IoT platforms, and various Qualcomm wireless connectivity chipsets. This broad impact means many consumer devices, enterprise mobile devices, automotive systems, and IoT devices could be vulnerable. No patches or known exploits are currently available, but the vulnerability's presence in firmware suggests updates will be required from device manufacturers. The technical root cause is a failure to properly validate input or event data length before accessing memory buffers, leading to over-read conditions and potential leakage of sensitive data such as cryptographic keys, user data, or system information.

For European organizations, the vulnerability poses a risk of sensitive information leakage from devices and infrastructure using affected Qualcomm Snapdragon platforms. This includes smartphones, tablets, automotive telematics units, IoT devices, and networking equipment. Confidentiality breaches could expose user data, cryptographic material, or proprietary information, potentially aiding further attacks or espionage. While the vulnerability does not directly impact system integrity or availability, information disclosure can undermine trust and compliance with data protection regulations such as GDPR. Organizations relying on mobile devices for secure communications or automotive systems for safety-critical functions may face increased risk if attackers gain local access. The broad range of affected platforms means that supply chain and endpoint security must be carefully managed. The absence of known exploits reduces immediate risk, but the complexity of patching embedded firmware and the long lifecycle of some devices could prolong exposure.

1. Monitor Qualcomm and device vendor advisories closely for firmware updates addressing CVE-2025-47331 and apply patches promptly. 2. Implement strict local access controls on devices using affected Snapdragon platforms to prevent unauthorized users from gaining low privilege access. 3. Employ endpoint detection and response (EDR) solutions to detect suspicious local activity that could indicate exploitation attempts. 4. For automotive and IoT deployments, enforce network segmentation and device authentication to limit attacker movement and access. 5. Conduct regular firmware inventory and vulnerability assessments to identify devices with vulnerable Qualcomm components. 6. Collaborate with device manufacturers to understand patch availability timelines and plan device update rollouts accordingly. 7. Educate users and administrators on the risks of local access vulnerabilities and enforce strong physical security controls. 8. Where feasible, consider deploying devices with alternative chipsets or architectures not affected by this vulnerability in high-risk environments.