CVE intelligence and bounded remediation

CVE-2026-30769 — Entechtaiwan Tvicport security vulnerability

High CVSS 7.8

An issue in the TVicPort64.sys component of EnTech Taiwan TVicPort Product v4.0, File v5.2.1.0 allows attackers to escalate privileges via sending crafted IOCTL 0x80002008 requests.

Severity
High
CVSS
7.8 (3.1)
Published
2026-04-29
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-20, CWE-269

Affected products

  • entechtaiwan / tvicport / 5.2.1.0

Matched remediation archetype

Privilege escalation and unsafe privilege management

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Check exposure

  • Map service accounts, operating-system identities, roles, capabilities, impersonation, set-user transitions, and administrative helper paths.
  • Determine whether untrusted users or lower-privilege processes can reach the affected transition or modify inputs it trusts.
  • Review file, socket, registry, device, job, container, and cloud-role permissions used before and after privilege changes.

Remediate safely

  • Apply the supported fix and redesign privileged operations as a minimal, authenticated, allowlisted interface.
  • Drop privileges before processing untrusted input, verify the drop succeeds, and remove unnecessary roles, capabilities, and write permissions.
  • Validate ownership and permissions at time of use and add explicit lower-to-higher privilege boundary tests.

Authoritative sources

Complete CVE record and remediation plan

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