CVE-2025-0288 is a high-severity vulnerability affecting Paragon Software's "Migrate OS to SSD" product, specifically version 4. The flaw resides in the kernel-mode driver biontdrv.sys, where an incorrect calculation of buffer size (CWE-131) occurs during the use of the memmove function. This function fails to properly validate or sanitize user-controlled input, allowing an attacker to write arbitrary data into kernel memory. Because this vulnerability exists in kernel space, exploitation can lead to privilege escalation, enabling an attacker with limited privileges (local access with low privileges) to gain higher-level system privileges. The CVSS 3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability. The attack vector is local (AV:L), requiring low attack complexity (AC:L) and low privileges (PR:L), but no user interaction (UI:N). The scope remains unchanged (S:U). No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability stems from improper buffer size calculation, which can cause memory corruption in kernel space, a critical security boundary. This type of vulnerability is particularly dangerous because kernel memory corruption can lead to system crashes, data leaks, or full system compromise. The affected product is specialized software used for migrating operating systems to SSDs, which is typically installed on endpoints or servers during hardware upgrades or migrations.

For European organizations, this vulnerability poses a significant risk, especially for enterprises and service providers that utilize Paragon Software's "Migrate OS to SSD" tool during hardware refresh cycles. Successful exploitation could allow attackers with local access to escalate privileges to SYSTEM or kernel level, potentially leading to full system compromise, unauthorized data access, or disruption of critical services. This is particularly concerning for organizations with strict data protection requirements under GDPR, as unauthorized access to sensitive data could result in compliance violations and heavy fines. Additionally, the ability to escalate privileges locally could facilitate lateral movement within networks, increasing the risk of broader compromise. The lack of required user interaction simplifies exploitation once local access is obtained, which could be achieved through other means such as phishing or physical access. The vulnerability could also impact managed service providers or IT departments performing OS migrations, potentially exposing multiple client environments if exploited.

Given the absence of an official patch at this time, European organizations should take immediate steps to mitigate risk. First, restrict access to systems where Paragon's "Migrate OS to SSD" is installed, limiting local user accounts and enforcing the principle of least privilege. Implement strict access controls and monitoring on endpoints used for OS migration tasks. Employ application whitelisting and endpoint protection solutions to detect and block suspicious behavior related to kernel memory manipulation. Network segmentation can reduce the risk of lateral movement if an attacker gains local access. Organizations should also prepare to deploy patches promptly once available from Paragon Software. Until then, consider alternative OS migration tools with a stronger security track record or perform migrations in isolated environments. Regularly audit and monitor system logs for unusual privilege escalation attempts. Finally, educate IT staff about the risks associated with this vulnerability and ensure that migration procedures include security checks.