CVE-2025-27030 is a medium severity vulnerability identified in multiple Qualcomm Snapdragon products, including a wide range of chipsets and platforms such as C-V2X 9150, QCA series, SA series, SDX55, and various Qualcomm Video Collaboration platforms. The vulnerability is classified as CWE-126, which corresponds to a buffer over-read condition. Specifically, this flaw occurs during the process of invoking calibration data from user space to update firmware size. A buffer over-read means that the software reads more data than it should from a buffer, potentially exposing sensitive information beyond the intended memory boundaries. In this case, the vulnerability leads to information disclosure, which compromises confidentiality but does not affect integrity or availability directly. The CVSS 3.1 base score is 6.1, reflecting a medium severity level. The vector string (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L) indicates that the attack requires local access with low complexity, low privileges, and no user interaction, and the scope is unchanged. The impact on confidentiality is high, while integrity is not affected, and availability impact is low. No known exploits are reported in the wild yet, and no patches have been linked at the time of publication. The vulnerability affects a broad range of Qualcomm Snapdragon chipsets widely used in mobile devices, automotive systems, and IoT platforms, which rely on these chipsets for wireless communication and multimedia processing. The flaw arises from improper bounds checking when handling calibration data, which could be leveraged by a local attacker or malicious application to read sensitive firmware or system data, potentially aiding further attacks or privacy violations.

For European organizations, the impact of CVE-2025-27030 can be significant, especially those relying on devices and systems powered by affected Qualcomm Snapdragon chipsets. This includes enterprises using mobile devices, automotive manufacturers integrating Snapdragon-based telematics and communication modules, and IoT deployments in smart infrastructure. The information disclosure could lead to leakage of sensitive calibration or firmware data, which may assist attackers in crafting more sophisticated exploits or reverse engineering proprietary technology. In automotive contexts, this could undermine vehicle security or privacy, potentially affecting connected car services and safety features. For mobile users, the vulnerability could expose private data or cryptographic material stored or processed by the chipset firmware. Although exploitation requires local access with low privileges, the widespread deployment of these chipsets means that malware or malicious insiders could exploit this flaw to escalate information gathering capabilities. The absence of known exploits in the wild currently reduces immediate risk, but the broad attack surface and critical nature of affected devices warrant proactive mitigation to prevent future exploitation.

Given the local access requirement, European organizations should focus on minimizing the risk of local exploitation by enforcing strict device access controls and application sandboxing. Specifically, organizations should: 1) Ensure all devices using affected Qualcomm Snapdragon chipsets run the latest firmware and operating system versions, applying vendor patches as soon as they become available. 2) Restrict installation of untrusted or unsigned applications that could attempt to invoke the vulnerable calibration data routines. 3) Employ mobile device management (MDM) solutions to enforce security policies, including application whitelisting and privilege restrictions. 4) Monitor device behavior for unusual local access attempts or privilege escalations that could indicate exploitation attempts. 5) For automotive and IoT deployments, isolate critical communication modules from general-purpose computing environments to reduce attack vectors. 6) Engage with Qualcomm and device manufacturers to obtain timely updates and security advisories. 7) Conduct security audits and penetration testing focused on local privilege escalation and information disclosure vectors to identify potential exploitation paths. These steps go beyond generic advice by emphasizing local access control, application vetting, and segmentation tailored to the specific nature of this vulnerability.