---
title: "CVE-2026-118603: Alpine iLX-F511 - Remote Code Execution"
description: "Alpine iLX-F511 contains a stack-based buffer overflow caused by improper validation of vCard data during parsing, letting network-adjacent attackers execute arbitrary code as root, exploit requires victim to connect to a malicious Bluetooth device."
url: https://panop.io/threat-heartbeat/CVE-2026-118603/
---

# CVE-2026-118603 Alpine iLX-F511 - Remote Code Execution

Alpine iLX-F511 contains a stack-based buffer overflow caused by improper validation of vCard data during parsing, letting network-adjacent attackers execute arbitrary code as root, exploit requires victim to connect to a malicious Bluetooth device.

CVSS base score 8.0 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-118603)

## Details

Type

Remote Code Execution

Impact

Remote Code Execution

CVSS vector

CVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Published

28 October 2026

Updated

29 October 2026

Weakness

[CWE-121](https://cwe.mitre.org/data/definitions/121.html)

## Vendor fix

Update to the latest available version that addresses this vulnerability.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-118603](https://nvd.nist.gov/vuln/detail/CVE-2026-118603)
- [https://www.zerodayinitiative.com/advisories/ZDI-26-821/](https://www.zerodayinitiative.com/advisories/ZDI-26-821/)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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