CVE-2023-42429

Local privilege escalation by privileged users

Published Jan 19, 2024 · Updated Jun 17, 2025

Improper buffer restrictions in Intel NUC BIOS firmware JYGLKCPX.0071 allow local users with high privileges to escalate privileges on NUC 7 systems. Intel identifies improper buffer restrictions but has not published the affected firmware component, buffer operation, or attacker-controlled input. Exploitation requires local access and high attack complexity; success grants higher privileges across a security boundary.

CVSS severity7.5
High
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper buffer restrictions in Intel NUC BIOS firmware JYGLKCPX.0071 allow local users with high privileges to escalate privileges on NUC 7 systems. Intel identifies improper buffer restrictions but has not published the affected firmware component, buffer operation, or attacker-controlled input. Exploitation requires local access and high attack complexity; success grants higher privileges across a security boundary.

The record

CVE
CVE-2023-42429
Published
Jan 19, 2024
Updated
Jun 17, 2025
Vendor
Topcon Positioning Systems, Inc.
Product
Intel NUC BIOS Firmware
Classifications
CWE-92, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=See references

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

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

Published CVSS scores

7.5Intel CorporationCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-92DEPRECATED: Improper Sanitization of Custom Special Characters
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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