CVE-2026-64407: Bluetooth: btnxpuart: Fix out-of-bounds firmware read in nxp_recv_fw_req_v3()

highCVSS 7.1CVE-2026-64407

CSIRTS triage

Other

What: An out-of-bounds firmware read occurs in the function nxp_recv_fw_req_v3().
Who is affected: Deployments using Bluetooth with the btnxpuart driver.
Urgency: Remediation is important to avoid potential vulnerabilities, but there are no known exploits.
Action: Update the Bluetooth driver to the patched version.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: high — CVSS 7.1
Published: 2026-07-14
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64407

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-644070.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-64407	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

unknownCVE-2026-64407: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btnxpuart: Fix …nvd

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