CVE-2022-33176

Privileged escalation via BIOS input validation

Published Nov 11, 2022 · Updated Feb 5, 2025

Improper input validation in Intel NUC 11 BIOS firmware before PATGL357.0042 allows privileged users to escalate privileges via local access. The advisory does not identify the BIOS component or malformed input path, so the exact validation failure remains undisclosed. Exploitation requires privileged local access and can affect system confidentiality, integrity, and availability through privilege escalation.

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 NUC 11 BIOS firmware before PATGL357.0042 allows privileged users to escalate privileges via local access. The advisory does not identify the BIOS component or malformed input path, so the exact validation failure remains undisclosed. Exploitation requires privileged local access and can affect system confidentiality, integrity, and availability through privilege escalation.

The record

CVE
CVE-2022-33176
Published
Nov 11, 2022
Updated
Feb 5, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-20, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Nov 11, 2022CVE publishedPublication date reported by the CVE source.
  2. Feb 5, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.2IntelCVSS: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 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-20CWE-20 Improper 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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