CVE-2026-40404
CSIRTS triage
- What
- This vulnerability allows elevation of privilege.
- Who is affected
- Deployments using the UDFS driver.
- Urgency
- Remediation is high urgency due to the high severity rating.
- Action
- Patch the UDFS driver for CVE-2026-40404.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.34% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 26% of all EPSS-scored CVEs.
Advisory coverage (1)
External references
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[](https://www.csirts.com/cve/CVE-2026-40404)