CVE-2026-108952: RT-Thread through 5.3.0 Memory Corruption via USB CDC VCOM Driver
RT-Thread · rt-thread
Vendor fix available · Affected: rt-thread · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 10% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- RT-Thread · rt-threadup to and including 5.3.0
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- RT-Thread
- Published
- October 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-108952 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.