CVE-2023-42766

Privileged local escalation

Published Jan 19, 2024 · Updated Jun 17, 2025

Improper input validation in Intel NUC 8 Compute Element BIOS firmware allows privileged local users to escalate privileges. Intel identifies the BIOS firmware as the affected locus but does not disclose which input is mishandled or what validation operation is missing. Exploitation requires local access, high privileges, and high-complexity conditions; Intel does not describe the resulting elevated execution context.

CVSS severity7.5
High
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Intel NUC 8 Compute Element BIOS firmware allows privileged local users to escalate privileges. Intel identifies the BIOS firmware as the affected locus but does not disclose which input is mishandled or what validation operation is missing. Exploitation requires local access, high privileges, and high-complexity conditions; Intel does not describe the resulting elevated execution context.

The record

CVE
CVE-2023-42766
Published
Jan 19, 2024
Updated
Jun 17, 2025
Vendor
Topcon Positioning Systems, Inc.
Product
Intel NUC 8 Compute Element BIOS Firmware
Classifications
CWE-20, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jan 19, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 17, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=See references

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Topcon Positioning Systems, Inc. · Intel NUC 8 Compute Element BIOS Firmwareversion=See references

Published CVSS scores

7.5IntelCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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