CVE-2026-70126 in Windows
Summary
by MITRE • 10/14/2026
Out-of-bounds read in Windows Bluetooth Port Driver allows an unauthorized attacker to execute code over an adjacent network.
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Analysis
by VulDB Data Team • 10/14/2026
The vulnerability identified as CVE-2024-30158 represents a critical security flaw within the Microsoft Windows Bluetooth Port Driver, specifically classified under CWE-126 which denotes out-of-bounds read operations. This defect arises from improper memory management practices where the driver fails to adequately validate buffer boundaries before accessing data structures in system memory. When an attacker interacts with the vulnerable component over a network or local interface, they can trigger this erroneous access pattern, leading to the reading of arbitrary memory locations that lie outside the intended allocation limits. The core technical issue stems from insufficient checks on array indices or pointer arithmetic during the processing of Bluetooth protocol packets, allowing for the extraction of sensitive information stored in adjacent memory regions without triggering standard exception handlers.
From an operational perspective, while out-of-bounds reads are often associated with information disclosure vulnerabilities that allow attackers to leak kernel-mode data such as cryptographic keys or system pointers, this specific instance carries a more severe implication due to its potential impact on code execution stability and integrity. By carefully crafting malicious Bluetooth packets, an attacker can manipulate the memory layout in ways that facilitate further exploitation steps. Although the primary classification is an out-of-bounds read, the ability to control data flow through adjacent network interactions creates pathways for privilege escalation or remote code execution if combined with other vulnerabilities like heap spraying techniques or use-after-free conditions within the same driver subsystem. This aligns with ATT&CK technique T1059 which covers command and script interpreter abuse, as well as T1203 regarding exploitation for client execution, highlighting how local drivers can serve as vectors for broader system compromise when network-accessible interfaces are involved.
The presence of this vulnerability in the Bluetooth Port Driver is particularly concerning because it resides in a high-privilege kernel component that handles low-level hardware communication. Attackers with physical access to the device or those capable of sending crafted wireless signals within range can exploit this flaw without requiring user interaction, thereby bypassing many traditional perimeter defenses. The lack of mandatory input validation allows for deterministic memory corruption patterns that security researchers and malicious actors alike can leverage to dump kernel memory contents, potentially revealing credentials, session tokens, or encryption keys used by other applications running on the same system. This undermines the confidentiality guarantees provided by Windows operating systems and exposes users to sophisticated attacks targeting sensitive data stored in volatile memory.
Mitigation strategies for this vulnerability primarily involve applying the latest security updates released by Microsoft which patch the underlying buffer validation logic within the Bluetooth Port Driver. Organizations should ensure that all endpoints are updated with cumulative patches addressing CVE-2024-30158 to close the gap between expected and actual array bounds checking. In environments where immediate patching is not feasible, network segmentation policies can help limit exposure by restricting unauthorized devices from connecting via Bluetooth interfaces or disabling unused wireless adapters entirely. Additionally, deploying endpoint detection and response solutions that monitor for anomalous memory access patterns in kernel drivers may provide early warning indicators of exploitation attempts targeting this specific flaw. Regular auditing of driver signatures and enforcing strict code signing requirements further reduces the risk of introducing unverified components that might exacerbate such vulnerabilities through additional attack surfaces.