CVE-2025-34450 MEDIUM

CVE-2025-34450: merbanan/rtl_433 <= 25.02 Stack-based Buffer Overflow

Vendor Merbanan
Product rtl_433
Weakness CWE-121
Published December 18, 2025
Last update May 14, 2026

CVSS base score

6.9/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

merbanan/rtl_433 versions up to and including 25.02 and prior to commit 25e47f8 contain a stack-based buffer overflow vulnerability in the function parse_rfraw() located in src/rfraw.c. When processing crafted or excessively large raw RF input data, the application may write beyond the bounds of a stack buffer, resulting in memory corruption or a crash. This vulnerability can be exploited to cause a denial of service and, under certain conditions, may be leveraged for further exploitation depending on the execution environment and available mitigations.

Key dates

02Disclosure timeline

December 18, 2025 CVE published
May 14, 2026 Record updated