Vulnerability · Published Oct 28, 2026 · Assigned by VulnCheck
CVE-2026-117609rtl_433 through 25.12 Stack-Based Buffer Overflow via Proflame 2 Decoder
High 7.1
In plain English
A high-severity stack buffer overflow in rtl_433 from merbanan. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).
Official description
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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | rtl-433 | no fix listed | DEBIAN-CVE-2026-117609 |
| Debian:13 | rtl-433 | no fix listed | DEBIAN-CVE-2026-117609 |
| Debian:14 | rtl-433 | no fix listed | DEBIAN-CVE-2026-117609 |
| Ubuntu:22.04:LTS | rtl-433 | no fix listed | UBUNTU-CVE-2026-117609 |
| Ubuntu:24.04:LTS | rtl-433 | no fix listed | UBUNTU-CVE-2026-117609 |
| Ubuntu:26.04:LTS | rtl-433 | no fix listed | UBUNTU-CVE-2026-117609 |
| Ubuntu:26.10 | rtl-433 | no fix listed | UBUNTU-CVE-2026-117609 |
Affected products (as reported)
Weakness: CWE-121 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
References
- https://github.com/merbanan/rtl_433/issues/3739 issue-tracking
- https://github.com/merbanan/rtl_433/pull/3740 patch, issue-tracking
- https://github.com/merbanan/rtl_433/commit/f35183aaf1d2d905d422fd70bcae4eb7349d6186 patch
- https://github.com/merbanan/rtl_433/blob/25.12/src/devices/proflame2.c#L46-L95 technical-description
- https://github.com/merbanan/rtl_433 product
- VulnCheck Advisory: rtl_433 through 25.12 Stack-Based Buffer Overflow via Proflame 2 Decoder third-party-advisory