9.8

CVE-2023-48695: azure-rtos usbx Out-of-bounds Write

CVSS: 9.8v3.1CriticalModified
Published 05-12-2023Last modified 29-05-2025
Open JSON

Vulnerability summary

CVE-2023-48695 is a critical (CVSS 9.8) Out-of-bounds Write vulnerability in azure-rtos usbx. EPSS estimates a 1.23% chance of exploitation in the next 30 days, higher than 68.4% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
1.23%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 05-12-2023
    PublishedVulnerability first disclosed.
  2. 29-05-2025
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

1.23%

Chance of exploitation in the next 30 days

Percentile

68%

Versus all other CVEs

30-day change

0.00 pp

From 1.23% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.23%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Azure-rtos1 product
Eclipse1 product

2 vendors · 2 products

References

1 links