CVE-2026-64342: USB: iowarrior: fix use-after-free on disconnect

highCVSS 7.8CVE-2026-64342

CSIRTS triage

vendor: Linux product: iowarriorOther

What: A use-after-free vulnerability exists on disconnect in the iowarrior driver.
Who is affected: Deployments of the iowarrior driver are affected.
Urgency: Remediation is necessary to prevent potential exploitation, although exploitation status is currently unknown.
Action: Update to the latest version of the iowarrior driver.

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

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: high — CVSS 7.8
Published: 2026-07-14
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64342

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-2026-643420.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-64342	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

unknownCVE-2026-64342: In the Linux kernel, the following vulnerability has been resolved: USB: iowarrior: fix use-af…nvd

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