CVE-2023-42772

Privilege escalation via untrusted firmware pointer dereference

Published Sep 16, 2024 · Updated Nov 3, 2025

Untrusted pointer dereference in Intel Xeon D processor UEFI firmware allows local users to escalate privileges via local access. Intel has not published the affected UEFI routine or how attacker-controlled pointer data reaches the dereference. Exploitation requires existing high privileges and an additional execution condition, and successful exploitation crosses a security boundary.

CVSS severity8.7
High
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Untrusted pointer dereference in Intel Xeon D processor UEFI firmware allows local users to escalate privileges via local access. Intel has not published the affected UEFI routine or how attacker-controlled pointer data reaches the dereference. Exploitation requires existing high privileges and an additional execution condition, and successful exploitation crosses a security boundary.

The record

CVE
CVE-2023-42772
Published
Sep 16, 2024
Updated
Nov 3, 2025
Vendor
Topcon Positioning Systems, Inc.
Product
Intel Xeon D-2799 Processor Firmware
Classifications
CWE-822, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Sep 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 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=0 <*

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Topcon Positioning Systems, Inc. · Intel Xeon D-2799 Processor Firmwareversion=0 <*

Published CVSS scores

8.2Intel CorporationCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
8.7Intel CorporationCVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA: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-822Untrusted Pointer Dereference
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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