# CVE-2026-118609: Alpine iLX-F511 Android Auto Connection Handler stack buffer overflow

Source: https://junglewise.ai/threats/cve-2026-118609-alpine-ilx-f511-android-auto-connection-handler-stack-based  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-28. Updated: 2026-10-28  
License: CC BY 4.0 with a link back

CVE-2026-118609 · Severity: medium · CVSS 6.8 · Published 2026-10-28

The Alpine iLX-F511 is an in-car entertainment system that integrates Android Auto. A stack-based buffer overflow in its Android Auto connection handler allows an attacker with physical access to the device to execute code with root privileges without needing to authenticate. An attacker could gain complete control of the vehicle's infotainment system.

Technologies: [Alpine iLX-F511](https://junglewise.ai/threats/technologies/ilx-f511). Vendors: [Alpine](https://junglewise.ai/threats/vendors/alpine).

## Quick answers

**Is CVE-2026-118609 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-118609 being exploited in the wild.

**How severe is CVE-2026-118609?** Medium severity, with a CVSS score of 6.8, published 28 October 2026.

**Which products and versions are affected?** Alpine iLX-F511.

**Is there a fix for CVE-2026-118609?** No fixed version is recorded yet. Restrict physical interaction with the device to trusted users only. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-118609 attacked?** It is attacked with physical access, in a network appliance.

**Am I affected by CVE-2026-118609?** Check whether you run Alpine iLX-F511. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix


Restrict physical interaction with the device to trusted users only.

## Technical details

The vulnerability exists in the Android Auto connection handler due to insufficient length validation before copying user-supplied data into a fixed-length stack buffer. An attacker with physical access can send crafted data to trigger the overflow and execute arbitrary code in root context. No authentication is required to exploit this flaw.

## Affected products

- Alpine iLX-F511

## Timeline

- 2026-02-04: disclosed: Vulnerability reported to vendor
- 2026-06-07: other: Vendor acknowledged receipt and requested extension
- 2026-07-21: other: ZDI requested status update on fix
- 2026-10-15: other: ZDI notified vendor of intention to publish as 0-day advisory
- 2026-10-28: advisory: Coordinated public release of advisory

## References

- [https://www.zerodayinitiative.com/advisories/ZDI-26-827/](https://www.zerodayinitiative.com/advisories/ZDI-26-827/)

## Related threats

- [Alpine iLX-F511 Bluetooth OBEX packet handling heap buffer overflow](https://junglewise.ai/threats/cve-2026-118611-alpine-ilx-f511-bluetooth-obex-packet-handling-heap-based-buffer)
- [Alpine iLX-F511 Android Auto Service stack buffer overflow RCE](https://junglewise.ai/threats/cve-2026-118610-alpine-ilx-f511-android-auto-service-stack-based-buffer-overflow)
- [Alpine iLX-F511 diagapp command injection vulnerability](https://junglewise.ai/threats/cve-2026-118607-alpine-ilx-f511-diagapp-command-injection-vulnerability-this)
- [Alpine iLX-F511 framework service remote code execution](https://junglewise.ai/threats/cve-2026-118606-alpine-ilx-f511-framework-service-exposed-dangerous-function)
- [Alpine iLX-F511 stack-based buffer overflow in prh_sdp_service_search_decode](https://junglewise.ai/threats/cve-2026-118605-alpine-ilx-f511-prh-sdp-service-search-decode-stack-based-buffer)