# CVE-2026-90975: CVE-2026-90975

Status: published. Published: 2026-11-06. Updated: 2026-11-06.

A vulnerability in Realtek's RtUsbA64.sys USB audio driver allows a local, low-privileged user to abuse a kernel I/O control (IOCTL) interface that acts on a caller-supplied user-mode pointer without proper validation or capture. By issuing crafted property requests an attacker can obtain kernel-mode read and write access, which can be leveraged for local privilege escalation and arbitrary kernel code execution.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Realtek / RtUsbA64.sys: 6.3.9600.2393 (affected). Source: CNA: certcc

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-822

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2026-90975 (CNA: certcc)

- https://www.kb.cert.org/vuls/id/701544 (ADP: CVE)

## Provenance

- CNA: certcc: https://www.cve.org/CVERecord?id=CVE-2026-90975; retrieved 2026-11-06; source updated 2026-11-06

Revision: bd95cb929ffe1d6ee3a0c59788b1cfb1de61155b06c4f36e2faf75401930da97

Canonical: https://y2.dev/cve/CVE-2026-90975

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