ZDI-26-474: (Pwn2Own) Sony XAV-9500ES l2_reassemble_sdu Heap-based Buffer Overflow Remote Code Execution Vulnerability
Sony XAV-9500ES l2_reassemble_sdu Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Sony XAV-9500ES devices. An attacker must first obtain the ability to pair a malicious Bluetooth device with the target system in order to exploit this vulnerability. The specific flaw exists within the handling of Bluetooth L2CAP packets. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-29072.
AI Analysis
Technical Summary
CVE-2026-18281 is a heap-based buffer overflow vulnerability in the l2_reassemble_sdu function of Sony XAV-9500ES devices. The vulnerability arises from improper validation of the length of user-supplied data before copying it to a heap buffer during Bluetooth L2CAP packet processing. Exploitation requires the attacker to pair a malicious Bluetooth device with the target system, enabling remote code execution in the context of the device. Sony has released an update to address this issue.
Potential Impact
Successful exploitation allows remote code execution with high impact on confidentiality, integrity, and availability of the affected device. An attacker can run arbitrary code remotely after pairing a malicious Bluetooth device, potentially leading to full compromise of the device.
Mitigation Recommendations
Sony has issued an official update to correct this vulnerability. Users of Sony XAV-9500ES devices should apply the provided update promptly to mitigate the risk. No additional mitigations are specified or required beyond applying the official fix.
ZDI-26-474: (Pwn2Own) Sony XAV-9500ES l2_reassemble_sdu Heap-based Buffer Overflow Remote Code Execution Vulnerability
Description
Sony XAV-9500ES l2_reassemble_sdu Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Sony XAV-9500ES devices. An attacker must first obtain the ability to pair a malicious Bluetooth device with the target system in order to exploit this vulnerability. The specific flaw exists within the handling of Bluetooth L2CAP packets. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-29072.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-18281 is a heap-based buffer overflow vulnerability in the l2_reassemble_sdu function of Sony XAV-9500ES devices. The vulnerability arises from improper validation of the length of user-supplied data before copying it to a heap buffer during Bluetooth L2CAP packet processing. Exploitation requires the attacker to pair a malicious Bluetooth device with the target system, enabling remote code execution in the context of the device. Sony has released an update to address this issue.
Potential Impact
Successful exploitation allows remote code execution with high impact on confidentiality, integrity, and availability of the affected device. An attacker can run arbitrary code remotely after pairing a malicious Bluetooth device, potentially leading to full compromise of the device.
Mitigation Recommendations
Sony has issued an official update to correct this vulnerability. Users of Sony XAV-9500ES devices should apply the provided update promptly to mitigate the risk. No additional mitigations are specified or required beyond applying the official fix.
Technical Details
- Article Source
- {"url":"http://www.zerodayinitiative.com/advisories/ZDI-26-474/","fetched":true,"fetchedAt":"2026-07-30T15:56:17.070Z","wordCount":214}
- Classification
- {"confidence":0.95,"severitySource":"cvss-text","classifier":"rss-v2"}
Threat ID: 6a6b74c59c2644c7f84cc2c7
Added to database: 07/30/2026, 15:59:01 UTC
Last enriched: 08/15/2026, 05:16:41 UTC
Last updated: 09/14/2026, 22:01:32 UTC
Views: 41
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