Stack-Based Buffer Overflow in merbanan/rtl_433 Affected by Memory Corruption
CVE-2025-34450

6.9MEDIUM

Key Information:

Vendor

Merbanan

Status
Rtl 433
Vendor
CVE Published:
18 December 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-34450?

The merbanan/rtl_433 product has a vulnerability in the parse_rfraw() function located in src/rfraw.c, which can lead to a stack-based buffer overflow when handling crafted or excessively large raw RF input data. This flaw permits the application to write past the boundaries of a stack buffer, potentially resulting in memory corruption or crashes. If exploited, the vulnerability can lead to a denial of service and may also open the door to further exploitation, depending on the specific execution environment and existing mitigations.

Affected Version(s)

rtl_433 0 <= 25.02

rtl_433 commit 25e47f8

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-34450 - Proof of Concept

References

https://github.com/marlinkcyber/advisories/blob/main/advi...
technical-descriptionexploit
https://github.com/merbanan/rtl_433/issues/3375
issue-tracking
https://github.com/dd32/rtl_433/commit/25e47f8
patch

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Vlatko Kosturjak with Marlink Cyber
JSON
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CVE-2025-34450 : Stack-Based Buffer Overflow in merbanan/rtl_433 Affected by Memory Corruption