How severe is CVE-2021-33089?

CVE-2021-33089 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-33089 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-33089?

CVE-2021-33089 affects Intel Nuc Hdmi Firmware Update Tool. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-33089?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-33089 published?

CVE-2021-33089 was published on 2021-11-17 and last updated on 2026-06-17.

CVE-2021-33089

CVE-2021-33089 is a high-severity vulnerability in Intel Nuc Hdmi Firmware Update Tool with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Intel Nuc Hdmi Firmware Update Tool
Published: 2021-11-17
Last modified: 2026-06-17

Description

Improper access control in the software installer for the Intel(R) NUC HDMI Firmware Update Tool for NUC8i3BE, NUC8i5BE, NUC8i7BE before version 1.78.4.0.4 may allow an authenticated user to potentially enable escalation of privilege via local access.

Frequently asked questions

What is CVE-2021-33089?: Improper access control in the software installer for the Intel(R) NUC HDMI Firmware Update Tool for NUC8i3BE, NUC8i5BE, NUC8i7BE before version 1.78.4.0.4 may allow an authenticated user to potentially enable escalation of privilege via local access.
How severe is CVE-2021-33089?: CVE-2021-33089 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-33089 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-33089?: CVE-2021-33089 affects Intel Nuc Hdmi Firmware Update Tool. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-33089?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-33089 published?: CVE-2021-33089 was published on 2021-11-17 and last updated on 2026-06-17.

References

https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00568.html

Affected products (1)

cpe:2.3:a:intel:nuc_hdmi_firmware_update_tool:*:*:*:*:*:*:*:*

More vulnerabilities in Intel Nuc Hdmi Firmware Update Tool

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CVE-2022-40971 — Medium (CVSS 6.7): Incorrect default permissions for the Intel(R) HDMI Firmware Update Tool for NUC before version 1.79.1.1 may allow an…
CVE-2022-21162 — Medium (CVSS 6.7): Uncontrolled search path for the Intel(R) HDMI Firmware Update tool for NUC before version 1.79.1.1 may allow an…

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