CVE-2025-27039 is a vulnerability identified in Qualcomm Snapdragon components, specifically impacting several FastConnect and WCD series chipsets (FastConnect 6900, 7800; SXR2230P, SXR2250P; WCD9380, WCD9385; WSA8830, WSA8832, WSA8835). The flaw arises from improper handling of IOCTL calls related to DMM/WARPNCC CONFIG requests, where detection of an error condition does not lead to appropriate corrective action, classified under CWE-390. This results in potential memory corruption, which can be exploited by a local attacker with limited privileges (PR:L) and no user interaction (UI:N). The attack complexity is low (AC:L), meaning exploitation does not require sophisticated conditions. The impact vector indicates a partial loss of confidentiality and integrity, with a high impact on availability, suggesting possible denial-of-service or system instability. The vulnerability affects the kernel or driver level of Snapdragon chipsets, which are widely used in mobile devices, IoT, and embedded systems. No public exploits are currently known, and Qualcomm has not yet released patches. The vulnerability was reserved in February 2025 and published in October 2025, indicating a recent discovery. The CVSS v3.1 score of 6.6 reflects a medium severity rating, balancing the local attack vector and the significant availability impact. This vulnerability could be leveraged to disrupt device functionality or escalate privileges if combined with other vulnerabilities.

For European organizations, the impact of CVE-2025-27039 is primarily on devices and systems using affected Qualcomm Snapdragon chipsets, which are prevalent in smartphones, tablets, IoT devices, and embedded systems. The memory corruption could lead to denial-of-service conditions, causing device crashes or reboots, impacting availability of critical communication or operational technology. Partial confidentiality and integrity loss may allow attackers to access or manipulate sensitive data, though the local attack requirement limits remote exploitation. Industries relying heavily on mobile connectivity, such as telecommunications, finance, healthcare, and manufacturing, could face operational disruptions. Additionally, IoT deployments in smart cities, transportation, and industrial control systems using these chipsets may experience reliability issues. The absence of known exploits reduces immediate risk, but the vulnerability could be targeted in the future, especially in environments where local access is possible. European organizations with stringent data protection regulations (e.g., GDPR) must consider the confidentiality implications and ensure timely remediation to avoid compliance issues.

1. Restrict local access to devices running affected Qualcomm Snapdragon chipsets by enforcing strict user privilege controls and physical security measures. 2. Monitor and audit IOCTL calls related to DMM/WARPNCC CONFIG requests for anomalous or unauthorized usage, employing kernel-level monitoring tools where feasible. 3. Apply vendor-provided patches or firmware updates as soon as they become available from Qualcomm or device manufacturers. 4. For embedded and IoT devices, implement network segmentation and access controls to limit exposure to potentially compromised devices. 5. Employ endpoint detection and response (EDR) solutions capable of detecting abnormal driver or kernel behavior indicative of exploitation attempts. 6. Coordinate with device vendors and suppliers to obtain timely vulnerability disclosures and updates. 7. Conduct regular security assessments and penetration testing focusing on local privilege escalation and memory corruption vectors. 8. Educate IT and security teams about the specific nature of this vulnerability to improve incident response readiness.