Quick answers
- Is CVE-2026-122113 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-122113 being exploited in the wild.
- How severe is CVE-2026-122113?
- Informational severity, published 6 November 2026.
- Which products and versions are affected?
- Realtek RtUsbA64.sys.
- Is there a fix for CVE-2026-122113?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-122113 attacked?
- It is attacked with physical access, in device firmware.
- Am I affected by CVE-2026-122113?
- Check whether you run Realtek RtUsbA64.sys. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability exists in RtUsbA64.sys's USB device topology-parsing logic, which fails to bound recursion depth when processing device descriptors during enumeration. A physically present attacker can craft a USB device with circular or deeply nested descriptors to exhaust the kernel stack, triggering a system bugcheck. The attack requires only physical access and no authentication.
Affected products
- Realtek RtUsbA64.sys
Timeline
- 2026-11-06: disclosed