(0Day) (Pwn2Own) Alpine iLX-F511 vCard Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability
Vulnerability Details
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected Alpine iLX-F511 devices. User interaction is required to exploit this vulnerability in that the target must connect to a malicious Bluetooth device.
The specific flaw exists within the parsing of vCard data. The issue results from the lack of proper validation of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root.
Additional Details
02/05/26 - ZDI reported the vulnerability to the vendor
06/07/26 - the vendor acknowledged the receipt of the report and asked for an extension
07/21/26 - ZDI requested an update on the status of the fix
10/15/26 - ZDI notified the vendor of the intention to publish the case as a 0-day advisory
-- Mitigation: Given the nature of the vulnerability, the only salient mitigation strategy is to restrict interaction with the product
Disclosure Timeline
- 2026-02-04 - Vulnerability reported to vendor
- 2026-10-28 - Coordinated public release of advisory
- 2026-10-28 - Advisory Updated
Credit
Bongeun Koo (@kiddo_pwn) and Evangelos Daravigkas (@freddo_1337) of Team DDOS
