---
id: "CVE-2026-117609"
kind: "vulnerability"
aliases: ["CVE-2026-117609"]
title: "rtl_433: stack overflow in Proflame decoder lets nearby radio attacker corrupt memory"
severity: "high"
cvss: 7.1
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["iot", "other", "radio-decoding", "rtl_433", "sdr", "self-hosted"]
not_affected_if: ["no-untrusted-signal-files", "not-installed"]
published_at: "2026-10-28T03:17:12+00:00"
first_seen_at: "2026-10-28T03:31:02+00:00"
updated_at: "2026-10-28T03:32:35+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-117609", "first_seen_at": "2026-10-28T03:31:02+00:00"}]
---

# rtl_433: stack overflow in Proflame decoder lets nearby radio attacker corrupt memory

rtl_433, a tool that decodes radio signals from home sensors, has a stack buffer overflow in its proflame2_mc() decoder. A nearby attacker sending a crafted OOK radio signal, or a crafted signal file, can crash it and may hijack control flow on builds without stack canaries.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Run `rtl_433 -V` to see the installed version and compare it with `25.12`
- Check whether the package manager lists rtl_433 and which version it installed
- unknown

## Fix

- Move to a rtl_433 release newer than `25.12`
- unknown

## Timeline

- 2026-10-28T03:31:02+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-117609

## From the sources

rtl_433 through 25.12 contains a stack-based buffer overflow vulnerability in proflame2_mc() that allows nearby attackers to write past a 7-byte stack buffer by sending more than seven valid Manchester-coded words. Attackers can transmit a crafted OOK radio signal or supply a crafted signal file to crash rtl_433 and corrupt stack memory, enabling control-flow hijacking on builds without stack canaries.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_