CVE-2025-0286 in Partition Manager
Summary
by MITRE • 03/03/2025
Various Paragon Software products contain an arbitrary kernel memory write vulnerability within biontdrv.sys that is caused by a failure to properly validate the length of user supplied data, which can allow an attacker to execute arbitrary code on the victim machine.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 04/15/2025
The vulnerability identified as CVE-2025-0286 represents a critical arbitrary kernel memory write flaw discovered within Paragon Software products, specifically affecting the biontdrv.sys driver component. This issue stems from insufficient validation of user-supplied data length parameters during kernel-level operations, creating a pathway for malicious actors to manipulate kernel memory directly. The vulnerability exists within the kernel-mode driver interface where input validation mechanisms fail to properly constrain the size of data structures passed from user space to kernel space, allowing for buffer overflows and memory corruption scenarios. Such flaws are particularly dangerous because they operate at the kernel level where privileges are highest and system stability is most critical.
The technical exploitation of this vulnerability follows a classic pattern of kernel-mode buffer overflow attacks where an attacker crafts malicious input data that exceeds expected buffer boundaries. When the biontdrv.sys driver processes this malformed input without proper length validation, it writes data beyond the allocated memory space, potentially overwriting critical kernel structures, function pointers, or other sensitive memory locations. This type of vulnerability maps directly to CWE-121, which describes heap-based buffer overflow conditions, and CWE-787, which covers out-of-bounds write conditions in heap-based buffers. The attack surface is particularly concerning as it allows for privilege escalation from user-mode to kernel-mode execution, providing attackers with complete system compromise capabilities.
From an operational perspective, this vulnerability presents a severe threat to systems running affected Paragon Software products, as successful exploitation can lead to complete system compromise without requiring elevated privileges initially. The attack chain typically begins with a user-space process interacting with the vulnerable driver through improper input validation, potentially through file system operations, disk management functions, or other driver interfaces that Paragon products provide. The impact extends beyond simple code execution to include potential data theft, system instability, and persistent backdoor installation. Attackers leveraging this vulnerability can manipulate kernel memory to redirect execution flow, modify system call tables, or inject malicious code that operates with kernel-level privileges. This aligns with ATT&CK technique T1068, which covers the use of privilege escalation techniques through kernel-mode exploits, and T1547.001, which involves the use of kernel modules for persistence.
Mitigation strategies for CVE-2025-0286 should prioritize immediate patch deployment from Paragon Software, as this represents a critical security flaw requiring vendor-supplied fixes. Organizations should implement network segmentation to limit exposure of systems running affected software, particularly those with elevated privileges or sensitive data. Monitoring for suspicious driver activity, unusual kernel-mode memory operations, and unauthorized system modifications should be implemented through endpoint detection and response solutions. Additionally, system administrators should consider disabling unnecessary driver interfaces and implementing strict access controls for Paragon software components. The vulnerability highlights the importance of proper input validation in kernel-mode drivers and underscores the need for comprehensive security testing of device drivers, particularly those handling user-supplied data. Organizations should also consider implementing exploit prevention measures such as kernel address space layout randomization and control flow integrity mechanisms to reduce the effectiveness of potential exploitation attempts.