High 7.1Published Oct 27, 2026

CVE-2026-117609rtl_433 through 25.12 Stack-Based Buffer Overflow via Proflame 2 Decoder

Updated under an hour ago (Oct 30, 2026, 4:23 AM ET)

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It affects merbanan rtl_433. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.35%, higher than 29% of scored CVEs.

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Start free and add your stackFree account, 3 products Every CVE for merbanan rtl_433 Exploited in the last 30 days

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.

CVSS: 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Weakness (CWE): CWE-121
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.35% (percentile 29)
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Oct 28, 2026
First seen by InfoSec Signals: Oct 27, 2026

Affected products

Affected products

merbanan rtl_433 merbanan:rtl_433 (from the name)	from 21.12 through 25.12	CNA record

References

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
https://www.vulncheck.com/advisories/rtl-433-through-25.12-stack-based-buffer-overflow-via-proflame-2-decoder	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.