CVE-2025-49495 is a buffer overflow vulnerability identified in the WiFi driver of Samsung Mobile Processors Exynos 1380, 1480, 2400, and 1580. The root cause is the mishandling of NL80211 vendor commands, which are used for vendor-specific extensions to the Linux wireless stack. This mishandling allows an attacker to craft malicious vendor commands that overflow a buffer in the driver, potentially leading to arbitrary code execution or system crashes. The vulnerability does not require any privileges or user interaction, meaning an attacker with local access to the device's WiFi interface can exploit it. The CVSS v3.1 score of 8.4 reflects its high impact on confidentiality, integrity, and availability, with low attack complexity and no required privileges or user interaction. Although no exploits have been reported in the wild yet, the vulnerability poses a significant risk due to the widespread use of affected Exynos processors in Samsung mobile devices. The flaw is categorized under CWE-120, indicating classic buffer overflow issues. The lack of available patches at the time of reporting means devices remain vulnerable until Samsung releases updates. The vulnerability could be leveraged to compromise device security, extract sensitive data, or disrupt mobile communications.

For European organizations, the vulnerability threatens the security of mobile devices using affected Samsung Exynos processors, which are common in consumer and enterprise smartphones. Exploitation could lead to unauthorized code execution, enabling attackers to bypass security controls, access confidential information, or disrupt device availability. This is particularly critical for sectors relying on mobile communications for sensitive operations, such as finance, healthcare, and government. The vulnerability could also facilitate lateral movement within corporate networks if compromised devices connect to internal resources. The absence of required privileges or user interaction lowers the barrier for exploitation, increasing risk. Additionally, the potential for denial of service could impact operational continuity. The threat is amplified in environments where mobile devices are used for multi-factor authentication or as endpoints for secure communications.

Organizations should prioritize monitoring for updates from Samsung and apply security patches promptly once released. Until patches are available, restrict local access to WiFi driver interfaces by enforcing strict device usage policies and limiting physical or local network access to trusted users only. Employ mobile device management (MDM) solutions to enforce security configurations and monitor device behavior for anomalies indicative of exploitation attempts. Network segmentation can reduce the impact of compromised devices on critical infrastructure. Additionally, educating users about the risks of connecting to untrusted networks or installing unauthorized applications can reduce exposure. Security teams should also implement endpoint detection and response (EDR) tools capable of identifying unusual WiFi driver activity. Finally, collaborate with vendors and security communities to stay informed about emerging exploit techniques related to this vulnerability.