CVE-2006-5405 in Bluetooth wireless device driver
Summary
by MITRE
Unspecified vulnerability in Toshiba Bluetooth wireless device driver 3.x and 4 through 4.00.35, as used in multiple products, allows physically proximate attackers to cause a denial of service (crash), corrupt memory, and possibly execute arbitrary code via crafted Bluetooth packets.
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Analysis
by VulDB Data Team • 04/25/2026
This vulnerability resides in the Toshiba Bluetooth wireless device driver versions 3.x and 4 through 4.00.35, affecting multiple Toshiba products that utilize Bluetooth connectivity. The flaw represents a critical security weakness that enables attackers with physical proximity to the affected devices to exploit the system through carefully crafted Bluetooth packets. The vulnerability manifests as an unspecified weakness within the driver implementation that fails to properly validate incoming Bluetooth traffic, creating potential attack vectors for malicious actors who can position themselves near target systems.
The technical nature of this vulnerability stems from inadequate input validation and memory handling within the Bluetooth driver components. When the driver receives malformed or specially constructed Bluetooth packets, it fails to properly sanitize the data before processing, leading to potential buffer overflows, memory corruption, or other exploitable conditions. This type of vulnerability aligns with CWE-125, which addresses out-of-bounds read conditions, and CWE-787, which covers out-of-bounds write operations. The driver's failure to implement proper bounds checking and input sanitization creates opportunities for attackers to manipulate memory structures and potentially execute arbitrary code.
The operational impact of this vulnerability extends beyond simple denial of service scenarios to encompass potential system compromise and data integrity threats. Physical proximity requirements for exploitation suggest this vulnerability may be leveraged in targeted attacks within specific geographic areas, such as corporate environments or public spaces where attackers can position themselves near vulnerable devices. The possibility of arbitrary code execution through this vulnerability places organizations at risk of complete system compromise, as attackers could potentially install malware, establish backdoors, or exfiltrate sensitive information from affected systems.
Attackers exploiting this vulnerability would likely employ techniques consistent with the attack pattern described in the ATT&CK framework under T1059.007 for command and script interpreter, and potentially T1068 for exploit for privilege escalation. The attack surface is particularly concerning because it requires minimal technical expertise to exploit, as the vulnerability exists within the driver layer that typically operates with elevated privileges. Organizations implementing mitigation strategies should focus on driver updates and patches as the primary defense mechanism, while also considering network segmentation and Bluetooth disablement on systems where wireless connectivity is not essential. Additionally, implementing proper access controls and monitoring for unusual Bluetooth activity can help detect potential exploitation attempts.
The broader implications of this vulnerability highlight the importance of secure driver development practices and regular security assessments of embedded system components. Given that the vulnerability affects multiple Toshiba products, it demonstrates how a single flaw in a widely deployed driver can create widespread exposure across various device types and industries. Security professionals should consider this vulnerability as part of a larger threat landscape where physical proximity attacks are increasingly relevant, particularly in environments where wireless technologies are prevalent and proper access controls may be insufficient to prevent exploitation.