CVE-2025-23105 is a high-severity vulnerability identified in Samsung Mobile Processors Exynos 2200, 1480, and 2400. The vulnerability is a Use-After-Free (UAF) condition, a type of memory corruption flaw where a program continues to use a pointer after the memory it points to has been freed. This can lead to unpredictable behavior, including privilege escalation. In this case, the UAF in the mobile processor firmware or driver code allows an attacker with limited privileges (low-level privileges) to escalate their privileges without requiring user interaction. The vulnerability has a CVSS v3.1 score of 7.8, indicating a high impact on confidentiality, integrity, and availability. The attack vector is local (AV:L), meaning the attacker needs local access to the device, but the attack complexity is low (AC:L), and no user interaction is required (UI:N). The scope is unchanged (S:U), but the impact on confidentiality, integrity, and availability is high (C:H/I:H/A:H). This suggests that exploitation could allow an attacker to gain full control over the device, potentially accessing sensitive data, modifying system components, or causing denial of service. The vulnerability is categorized under CWE-276 (Incorrect Default Permissions), which implies that improper handling of memory or permissions in the processor's software stack is the root cause. No known exploits are currently reported in the wild, and no patches or vendor advisories are listed yet. Given the affected processors are widely used in Samsung mobile devices, this vulnerability poses a significant risk to the security of affected smartphones and tablets.

For European organizations, this vulnerability presents a substantial risk, especially for enterprises and government agencies that rely on Samsung mobile devices for communication and data access. Successful exploitation could allow attackers to bypass security controls on mobile devices, leading to unauthorized access to corporate emails, confidential documents, and internal networks. The high impact on confidentiality, integrity, and availability means attackers could exfiltrate sensitive data, implant persistent malware, or disrupt device functionality. This is particularly concerning for sectors with stringent data protection requirements such as finance, healthcare, and public administration. Moreover, the local attack vector implies that attackers would need physical or local access to the device, which could be feasible in scenarios involving lost or stolen devices or insider threats. The lack of user interaction requirement increases the risk of stealthy exploitation. The vulnerability could also undermine mobile device management (MDM) solutions and endpoint security strategies that assume the underlying hardware and firmware are secure.

1. Immediate mitigation should focus on restricting physical and local access to devices, including enforcing strong device lock mechanisms and remote wipe capabilities. 2. Organizations should monitor for firmware and software updates from Samsung and apply patches promptly once available. 3. Employ mobile threat defense (MTD) solutions that can detect anomalous behavior indicative of privilege escalation attempts. 4. Enforce strict access controls and use hardware-backed security features such as Trusted Execution Environments (TEE) to limit the impact of compromised processors. 5. Educate users about the risks of leaving devices unattended and the importance of reporting lost or stolen devices immediately. 6. Implement network segmentation and zero-trust principles to minimize lateral movement if a device is compromised. 7. Conduct regular security audits and penetration testing focusing on mobile device security to identify potential exploitation paths. 8. Collaborate with Samsung and security communities to stay informed about emerging threats and mitigation techniques related to this vulnerability.