---
id: CVE-2021-0158
title: >-
  Improper input validation in the BIOS firmware for some Intel(R) Processors
  may allow a privileged user to potentially enable escalation of privilege via
  local access.
summary: >-
  Improper input validation in the BIOS firmware for some Intel(R) Processors
  may allow a privileged user to potentially enable escalation of privilege via
  local access.
severity: medium
cvss: 6.7
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-20
vendor: intel
product: celeron_n2805
affected:
  - celeron_n2805
  - celeron_n2806
  - celeron_n2807
  - celeron_n2808
  - celeron_n2810
  - celeron_n2815
  - celeron_n2820
  - celeron_n2830
  - celeron_n2840
  - celeron_n2910
  - celeron_n2920
  - celeron_n2930
  - celeron_n2940
  - celeron_n3000
  - celeron_n3010
  - celeron_n3050
  - celeron_n3060
  - celeron_n3150
  - celeron_n3160
  - celeron_n3350
  - celeron_n3350e
  - celeron_n3450
  - celeron_n4000
  - celeron_n4020
  - celeron_n4100
  - celeron_n4120
  - celeron_n4500
  - celeron_n4505
  - celeron_n5100
  - celeron_n5105
  - celeron_n6210
  - celeron_n6211
  - core_i3-1000g1
  - core_i3-1000g4
  - core_i3-1005g1
  - core_i3-10100
  - core_i3-10100e
  - core_i3-10100f
  - core_i3-10100t
  - core_i3-10100te
  - core_i3-10100y
  - core_i3-10105
  - core_i3-10105f
  - core_i3-10105t
  - core_i3-10110u
  - core_i3-10110y
  - core_i3-10300
  - core_i3-10300t
  - core_i3-10305
  - core_i3-10305t
  - core_i3-10320
  - core_i3-10325
  - core_i3-11100he
  - core_i3-1110g4
  - core_i3-1115g4
  - core_i3-1115g4e
  - core_i3-1115gre
  - core_i3-1120g4
  - core_i3-1125g4
  - core_i3-7020u
  - core_i3-7100
  - core_i3-7100e
  - core_i3-7100h
  - core_i3-7100t
  - core_i3-7100u
  - core_i3-7101e
  - core_i3-7101te
  - core_i3-7102e
  - core_i3-7130u
  - core_i3-7167u
  - core_i3-7300
  - core_i3-7300t
  - core_i3-7320
  - core_i3-7350k
  - core_i3-8100
  - core_i3-8100b
  - core_i3-8100h
  - core_i3-8100t
  - core_i3-8109u
  - core_i3-8130u
  - core_i3-8140u
  - core_i3-8145u
  - core_i3-8145ue
  - core_i3-8300
  - core_i3-8300t
  - core_i3-8350k
  - core_i5-10200h
  - core_i5-10210u
  - core_i5-10210y
  - core_i5-10300h
  - core_i5-1030g4
  - core_i5-1030g7
  - core_i5-10310u
  - core_i5-10310y
  - core_i5-1035g1
  - core_i5-1035g4
  - core_i5-1035g7
  - core_i5-1038ng7
  - core_i5-10400
  - core_i5-10400f
published: '2021-11-17'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T18:17:10.400'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2021-0158'
references:
  - url: >-
      https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00562.html
    label: secure@intel.com
  - url: >-
      https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00562.html
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-07T17:53:20.495484Z'
epss: 0.03023
epssPercentile: 0.87054
ingestedAt: '2026-10-07T18:42:20.873Z'
---

## Overview

Improper input validation in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access.

## Affected

- `celeron_n2805`
- `celeron_n2806`
- `celeron_n2807`
- `celeron_n2808`
- `celeron_n2810`
- `celeron_n2815`
- `celeron_n2820`
- `celeron_n2830`
- `celeron_n2840`
- `celeron_n2910`
- `celeron_n2920`
- `celeron_n2930`
- `celeron_n2940`
- `celeron_n3000`
- `celeron_n3010`
- `celeron_n3050`
- `celeron_n3060`
- `celeron_n3150`
- `celeron_n3160`
- `celeron_n3350`
- `celeron_n3350e`
- `celeron_n3450`
- `celeron_n4000`
- `celeron_n4020`
- `celeron_n4100`
- `celeron_n4120`
- `celeron_n4500`
- `celeron_n4505`
- `celeron_n5100`
- `celeron_n5105`
- `celeron_n6210`
- `celeron_n6211`
- `core_i3-1000g1`
- `core_i3-1000g4`
- `core_i3-1005g1`
- `core_i3-10100`
- `core_i3-10100e`
- `core_i3-10100f`
- `core_i3-10100t`
- `core_i3-10100te`
- `core_i3-10100y`
- `core_i3-10105`
- `core_i3-10105f`
- `core_i3-10105t`
- `core_i3-10110u`
- `core_i3-10110y`
- `core_i3-10300`
- `core_i3-10300t`
- `core_i3-10305`
- `core_i3-10305t`
- `core_i3-10320`
- `core_i3-10325`
- `core_i3-11100he`
- `core_i3-1110g4`
- `core_i3-1115g4`
- `core_i3-1115g4e`
- `core_i3-1115gre`
- `core_i3-1120g4`
- `core_i3-1125g4`
- `core_i3-7020u`
- `core_i3-7100`
- `core_i3-7100e`
- `core_i3-7100h`
- `core_i3-7100t`
- `core_i3-7100u`
- `core_i3-7101e`
- `core_i3-7101te`
- `core_i3-7102e`
- `core_i3-7130u`
- `core_i3-7167u`
- `core_i3-7300`
- `core_i3-7300t`
- `core_i3-7320`
- `core_i3-7350k`
- `core_i3-8100`
- `core_i3-8100b`
- `core_i3-8100h`
- `core_i3-8100t`
- `core_i3-8109u`
- `core_i3-8130u`
- `core_i3-8140u`
- `core_i3-8145u`
- `core_i3-8145ue`
- `core_i3-8300`
- `core_i3-8300t`
- `core_i3-8350k`
- `core_i5-10200h`
- `core_i5-10210u`
- `core_i5-10210y`
- `core_i5-10300h`
- `core_i5-1030g4`
- `core_i5-1030g7`
- `core_i5-10310u`
- `core_i5-10310y`
- `core_i5-1035g1`
- `core_i5-1035g4`
- `core_i5-1035g7`
- `core_i5-1038ng7`
- `core_i5-10400`
- `core_i5-10400f`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.