merbanan rtl_433 up to 25.02 src/rfraw.c parse_rfraw stack-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in merbanan rtl_433 up to 25.02. Affected is the function parse_rfraw of the file src/rfraw.c. Performing a manipulation results in stack-based overflow. This vulnerability is cataloged as CVE-2025-34450. The attack must be initiated from a local position. There is no exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in merbanan rtl_433 up to 25.02. It has been classified as problematic. This affects the function parse_rfraw of the file src/rfraw.c. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on availability. The summary by CVE is:

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.

The weakness was shared by Vlatko Kosturjak as SAID-2025-004. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2025-34450 since 04/15/2025. The exploitability is told to be easy. Attacking locally is a requirement. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 279419 (Linux Distros Unpatched Vulnerability : CVE-2025-34450), which helps to determine the existence of the flaw in a target environment.

Applying the patch 25e47f8 is able to eliminate this problem.

The vulnerability is also documented in the databases at Tenable (279419) and EUVD (EUVD-2025-204399). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.5

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 279419
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-34450

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: 25e47f8

Timelineinfo

04/15/2025 CVE reserved
12/18/2025 +247 days Advisory disclosed
12/18/2025 +0 days VulDB entry created
12/31/2025 +13 days VulDB entry last update

Sourcesinfo

Advisory: SAID-2025-004
Researcher: Vlatko Kosturjak
Status: Confirmed

CVE: CVE-2025-34450 (🔒)
GCVE (CVE): GCVE-0-2025-34450
GCVE (VulDB): GCVE-100-337479
EUVD: 🔒

Entryinfo

Created: 12/18/2025 22:41
Updated: 12/31/2025 19:00
Changes: 12/18/2025 22:41 (70), 12/19/2025 04:33 (1), 12/21/2025 03:43 (2), 12/31/2025 19:00 (11)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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