CVE-2022-33945

Privilege escalation via undisclosed BIOS input validation

Published Nov 14, 2023 · Updated Aug 14, 2024

Improper input validation in Intel server BIOS firmware allows local privileged users to escalate privileges through local access. Intel identifies BIOS firmware as the affected locus but has not disclosed the input, validation error, or code path that mishandles it. Exploitation requires existing high privileges and local access, and successful exploitation crosses a security scope and compromises confidentiality, integrity, and availability.

CVSS severity8.2
High
EPSS probability0.23%
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 server BIOS firmware allows local privileged users to escalate privileges through local access. Intel identifies BIOS firmware as the affected locus but has not disclosed the input, validation error, or code path that mishandles it. Exploitation requires existing high privileges and local access, and successful exploitation crosses a security scope and compromises confidentiality, integrity, and availability.

The record

CVE
CVE-2022-33945
Published
Nov 14, 2023
Updated
Aug 14, 2024
Vendor
Topcon Positioning Systems, Inc.
Product
Intel Server M20NTP Family
Classifications
CWE-20
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Nov 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 14, 2024Record 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 <0022.D02

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Topcon Positioning Systems, Inc. · Intel Server M20NTP Familyversion=0 <0022.D02
Topcon Positioning Systems, Inc. · Intel Server System M70KLP Familyversion=0 <01.04.0029
Topcon Positioning Systems, Inc. · Intel Server Board M10JNP2SBversion=0 <7.219
Topcon Positioning Systems, Inc. · Intel Server Board S2600BP Familyversion=0 <02.01.0015

Published CVSS scores

6.7NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
8.2Intel CorporationCVSS:3.1/AV:L/AC:L/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.

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

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

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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