---
id: CVE-2026-117609
title: rtl_433 through 25.12 Stack-Based Buffer Overflow via Proflame 2 Decoder
summary: >-
  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…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H'
cvssSource: cna
cwe:
  - CWE-121
vendor: merbanan
product: rtl_433
affected:
  - rtl_433 >= 21.12 <= 25.12
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-28T14:35:22.684428Z'
published: '2026-10-28'
updated: '2026-10-28'
sourceUpdated: '2026-10-28T16:12:02.323Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-117609'
references:
  - url: 'https://github.com/merbanan/rtl_433/issues/3739'
  - url: 'https://github.com/merbanan/rtl_433/pull/3740'
  - url: >-
      https://github.com/merbanan/rtl_433/commit/f35183aaf1d2d905d422fd70bcae4eb7349d6186
  - url: >-
      https://github.com/merbanan/rtl_433/blob/25.12/src/devices/proflame2.c#L46-L95
  - url: 'https://github.com/merbanan/rtl_433'
  - url: >-
      https://www.vulncheck.com/advisories/rtl-433-through-25.12-stack-based-buffer-overflow-via-proflame-2-decoder
    label: >-
      VulnCheck Advisory: rtl_433 through 25.12 Stack-Based Buffer Overflow via
      Proflame 2 Decoder
tags:
  - cve.org
epss: 0.0035
epssPercentile: 0.28837
ingestedAt: '2026-10-28T03:02:57.628Z'
---

## Overview

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.

## Affected

- `rtl_433 >= 21.12 <= 25.12`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.