CVE-2026-108952 (GCVE-0-2026-108952)

Vulnerability from cvelistv5 – Published: 2026-10-12 12:13 – Updated: 2026-10-13 14:59
VLAI
Title
RT-Thread through 5.3.0 Memory Corruption via USB CDC VCOM Driver
Summary
RT-Thread through 5.3.0 contains a memory corruption vulnerability in the legacy USB CDC virtual COM port driver that aliases rx_ringbuffer as a Serial V2 rt_serial_rx_fifo in _function_enable(). A connected USB host configuring the CDC device triggers writes past the ring buffer into struct vcom members and an invalid rt_free() on close, causing denial of service.
Severity
5.1 (Medium)
CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
4.6 (Medium)
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 14:58 UTC
CWE
  • CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7818 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
RT-Thread rt-thread Affected: 0 , ≤ 5.3.0 (semver)
    cpe:2.3:a:thread_project:thread:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-23 00:00
Credits
Jaeyeong Lee Ijae Kim Myeonghun Pak Yuho Choi Taegyu Kim
Show details on NVD website
To clipboard 

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