VDB-246804 · CVE-2023-48695 · GHSA-mwj9-rpph-v8wc

azure-rtos usbx up to 6.2.1 out-of-bounds write

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.1	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in azure-rtos usbx up to 6.2.1. This affects an unknown function. The manipulation results in out-of-bounds write. This vulnerability is cataloged as CVE-2023-48695. An attack on the physical device is feasible. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in azure-rtos usbx up to 6.2.1. It has been classified as critical. Affected is an unknown code block. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Azure RTOS USBX is a USB host, device, and on-the-go (OTG) embedded stack, that is fully integrated with Azure RTOS ThreadX. An attacker can cause remote code execution due to out of bounds write vulnerabilities in Azure RTOS USBX. The affected components include functions/processes in host and device classes, related to CDC ECM and RNDIS in RTOS v6.2.1 and below. The fixes have been included in USBX release 6.3.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.

The weakness was shared 12/05/2023 as GHSA-mwj9-rpph-v8wc. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2023-48695 since 11/17/2023. There are neither technical details nor an exploit publicly available.

Upgrading to version 6.3.0 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

azure-rtos

Name

usbx

Version

Website

Product: https://github.com/azure-rtos/usbx/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 7.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 7.3
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: usbx 6.3.0

Timelineinfo

11/17/2023 🔍
12/05/2023 +18 days 🔍
12/05/2023 +0 days 🔍
10/27/2025 +692 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-mwj9-rpph-v8wc
Status: Confirmed

CVE: CVE-2023-48695 (🔍)
GCVE (CVE): GCVE-0-2023-48695
GCVE (VulDB): GCVE-100-246804

Entryinfo

Created: 12/05/2023 07:34
Updated: 10/27/2025 15:31
Changes: 12/05/2023 07:34 (50), 12/23/2023 09:50 (11), 10/27/2025 15:31 (16)
Complete: 🔍
Cache ID: 216::103