CVE-2026-30769: An issue in the TVicPort64.sys component of EnTech Taiwan TVicPort Product v4.0, File v5.2.1.0 allows attacker

Routine

HIGH 7.8DOWNGRADE

CVE-2026-30769 is a high-severity flaw (CVSS 7.8) affecting tvicport. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.1% (top 97%)
CISA exploited list	No
Weakness	CWE-20, CWE-269
Published	2026-04-29
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: entechtaiwan

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-29 16:16 UTCPublished CVE record published
2026-06-17 10:32 UTCUpdated Record last modified

entechtaiwan tvicport DOWNGRADE

Affected: 5.2.1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.2.1.0

1. Check installed version

apt-cache policy tvicport || rpm -q tvicport || tvicport --version

2. No fixed release: DOWNGRADE to a release before 5.2.1.0 (Debian / Ubuntu)

apt-cache madison tvicport sudo apt install tvicport=<VERSION_BEFORE_5.2.1.0> sudo apt-mark hold tvicport

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list tvicport sudo dnf downgrade tvicport-<VERSION_BEFORE_5.2.1.0> sudo dnf versionlock add tvicport

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-30769?

tvicport: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-30769 being exploited?

CVE-2026-30769 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-30769 affect?

CVE-2026-30769 affects tvicport. Severity is 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.

How urgent is CVE-2026-30769?

Priority 28/100. High severity

References

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