CVE-2023-21675

Description

Windows Kernel Elevation of Privilege Vulnerability

Overview

State: PUBLISHED
Assigner (CNA): microsoft
CVSS severity: HIGH
CVSS score: 7.8 / 10
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Effective score: 7.8 / 10 HIGH source: CNA overview
MSRC score: 7.8 / 10 HIGH MS rating: Important · Elevation of Privilege
CWE(s): CWE-843
Reserved: 2022-12-13
Published: 2023-01-10 08:00 UTC
Last updated: 2023-01-10 08:00 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2023/21xxx/CVE-2023-21675.json
Linked Threat: CVE-2023-21675 — Windows Kernel Elevation of Privilege Vulnerability

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2023-01-10 22:15:16 UTC
NVD last modified: 2026-06-17 05:33:36 UTC
NVD CVSS v3.1: 7.8 / 10 HIGH source: secure@microsoft.com
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability subscore: 1.8 / 10
Impact subscore: 5.9 / 10
EPSS score: 0.0083 (probability of exploitation in next 30 days)
EPSS percentile: 53.76% vs all CVEs — higher = more likely to be exploited, as of 2026-07-29

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2023-25842
Assigner: microsoft
Published: Jan 10, 2023, 12:00:00 AM
Updated: Jan 1, 2025, 12:36:21 AM
EUVD base score (CVSS 3.1): 7.8 / 10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
EUVD-reported EPSS: 0.9900
Vendors: Microsoft
Products: Windows 11 version 21H2 (10.0.0 <10.0.22000.1455)

Windows 10 Version 22H2 (10.0.19045.0 <10.0.19045.2486)

Windows Server 2008 Service Pack 2 (6.0.6003.0 <6.0.6003.21872)

Windows Server 2008 Service Pack 2 (Server Core installation) (6.0.6003.0 <6.0.6003.21872)

Windows Server 2019 (Server Core installation) (10.0.17763.0 <10.0.17763.3887)

Windows 8.1 (6.3.0 <6.3.9600.20778)

Windows 7 (6.1.0 <6.1.7601.26321)

Windows 7 Service Pack 1 (6.1.0 <6.1.7601.26321)

Windows Server 2008 R2 Service Pack 1 (6.1.7601.0 <6.1.7601.26321)

Windows 10 Version 20H2 (10.0.0 <10.0.19042.2486)

Windows 10 Version 1809 (10.0.17763.0 <10.0.17763.3887)

Windows Server 2016 (Server Core installation) (10.0.14393.0 <10.0.14393.5648)

Windows Server 2012 R2 (Server Core installation) (6.3.9600.0 <6.3.9600.20778)

Windows Server 2012 (6.2.9200.0 <6.2.9200.24075)

Windows Server 2022 (10.0.20348.0 <10.0.20348.1487)

Windows Server 2008 Service Pack 2 (6.0.6003.0 <6.0.6003.21872)

Windows Server 2012 (Server Core installation) (6.2.9200.0 <6.2.9200.24075)

Windows 10 Version 1607 (10.0.14393.0 <10.0.14393.5648)

Windows 11 version 22H2 (10.0.22621.0 <10.0.22621.1105)

Windows Server 2008 R2 Service Pack 1 (Server Core installation) (6.1.7601.0 <6.1.7601.26321)

Windows 10 Version 1809 (10.0.0 <10.0.17763.3887)

Windows Server 2016 (10.0.14393.0 <10.0.14393.5648)

Windows 10 Version 21H2 (10.0.19043.0 <10.0.19044.2486)

Windows Server 2012 R2 (6.3.9600.0 <6.3.9600.20778)

Windows Server 2019 (10.0.17763.0 <10.0.17763.3887)

Windows 10 Version 1507 (10.0.10240.0 <10.0.10240.19685)
Aliases: GHSA-9397-p37c-vw49

ENISA description: Windows Kernel Elevation of Privilege Vulnerability

EUVD references (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21675

Microsoft Security Response Center MSRC

Microsoft's vendor-authoritative record from the Security Update Guide — its own CVSS score, impact, severity rating, exploit assessment, and KB-article fixes. Refreshed 2026-08-12 01:01 UTC (source: CVRF).

MS severity: Important
Impact: Elevation of Privilege
MS CVSS base score: 7.8 / 10 (temporal 6.8)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Exploit assessment: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely;DOS:N/A
Release: 2023-Jan

Microsoft remediations / KB articles (26)

5022286 — Vendor Fix / Security Update (fixed build 10.0.17763.3887)
5022286 — Update
5022291 — Vendor Fix / Security Update (fixed build 10.0.20348.1487)
5022282 — Vendor Fix / Security Update (fixed build 10.0.19042.2486)
5022282 — Update
5022287 — Vendor Fix / Security Update (fixed build 10.0.22000.1455)
5022303 — Vendor Fix / Security Update (fixed build 10.0.22621.1105)
5022303 — Update
5022297 — Vendor Fix / Security Update (fixed build 10.0.10240.19685)
5022289 — Vendor Fix / Security Update (fixed build 10.0.14393.5648)
5022338 — Vendor Fix / Monthly Rollup (fixed build 6.1.7601.26321)
5022338 — Update
5022339 — Vendor Fix / Security Only (fixed build 6.1.7601.26321)
5022339 — Update
5022352 — Vendor Fix / Monthly Rollup (fixed build 6.3.9600.20778)
5022352 — Update
5022346 — Vendor Fix / Security Only (fixed build 6.3.9600.20778)
5022346 — Update
5022340 — Vendor Fix / Monthly Rollup (fixed build 6.0.6003.21872)
5022340 — Update
5022353 — Vendor Fix / Security Only (fixed build 6.0.6003.21872)
5022353 — Update
5022348 — Vendor Fix / Monthly Rollup (fixed build 6.2.9200.24075)
5022348 — Update
5022343 — Vendor Fix / Security Only (fixed build 6.2.9200.24075)
5022343 — Update

Microsoft FAQ (1)

What privileges could be gained by an attacker who successfully exploited this vulnerability?

An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.

Affected products (26)

Vendor	Product	Versions	Platforms
Microsoft	Windows 10 Version 1809	`10.0.17763.0` (affected)	32-bit Systems, x64-based Systems
Microsoft	Windows 10 Version 1809	`10.0.0` (affected)	ARM64-based Systems
Microsoft	Windows Server 2019	`10.0.17763.0` (affected)	x64-based Systems
Microsoft	Windows Server 2019 (Server Core installation)	`10.0.17763.0` (affected)	x64-based Systems
Microsoft	Windows Server 2022	`10.0.20348.0` (affected)	x64-based Systems
Microsoft	Windows 10 Version 20H2	`10.0.0` (affected)	32-bit Systems, ARM64-based Systems
Microsoft	Windows 11 version 21H2	`10.0.0` (affected)	x64-based Systems, ARM64-based Systems
Microsoft	Windows 10 Version 21H2	`10.0.19043.0` (affected)	32-bit Systems, ARM64-based Systems, x64-based Systems
Microsoft	Windows 11 version 22H2	`10.0.22621.0` (affected)	ARM64-based Systems, x64-based Systems
Microsoft	Windows 10 Version 22H2	`10.0.19045.0` (affected)	x64-based Systems, ARM64-based Systems, 32-bit Systems
Microsoft	Windows 10 Version 1507	`10.0.10240.0` (affected)	32-bit Systems, x64-based Systems
Microsoft	Windows 10 Version 1607	`10.0.14393.0` (affected)	32-bit Systems, x64-based Systems
Microsoft	Windows Server 2016	`10.0.14393.0` (affected)	x64-based Systems
Microsoft	Windows Server 2016 (Server Core installation)	`10.0.14393.0` (affected)	x64-based Systems
Microsoft	Windows 7	`6.1.0` (affected)	32-bit Systems
Microsoft	Windows 7 Service Pack 1	`6.1.0` (affected)	x64-based Systems
Microsoft	Windows 8.1	`6.3.0` (affected)	32-bit Systems, x64-based Systems, ARM64-based Systems
Microsoft	Windows Server 2008 Service Pack 2	`6.0.6003.0` (affected)	32-bit Systems
Microsoft	Windows Server 2008 Service Pack 2 (Server Core installation)	`6.0.6003.0` (affected)	32-bit Systems, x64-based Systems
Microsoft	Windows Server 2008 Service Pack 2	`6.0.6003.0` (affected)	x64-based Systems
Microsoft	Windows Server 2008 R2 Service Pack 1	`6.1.7601.0` (affected)	x64-based Systems
Microsoft	Windows Server 2008 R2 Service Pack 1 (Server Core installation)	`6.1.7601.0` (affected)	x64-based Systems
Microsoft	Windows Server 2012	`6.2.9200.0` (affected)	x64-based Systems
Microsoft	Windows Server 2012 (Server Core installation)	`6.2.9200.0` (affected)	x64-based Systems
Microsoft	Windows Server 2012 R2	`6.3.9600.0` (affected)	x64-based Systems
Microsoft	Windows Server 2012 R2 (Server Core installation)	`6.3.9600.0` (affected)	x64-based Systems

Affected products — CPE 2.3 (31) NVD

NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.

cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_20h2:-:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_10_20h2:-:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_20h2:-:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_11_21h2:-:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_21h2:-:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_22h2:-:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_22h2:-:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:*

Vendor references (1)

References embedded in the original CVE record by the assigning CNA.

Windows Kernel Elevation of Privilege Vulnerability vendor-advisory

Web references (27)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

5022282 msrc
5022286 msrc
5022287 msrc
5022289 msrc
5022291 msrc
5022297 msrc
5022303 msrc
5022338 msrc
5022339 msrc
5022340 msrc
5022343 msrc
5022346 msrc
5022348 msrc
5022352 msrc
5022353 msrc
MSRC update guide: CVE-2023-21675 msrc
5022282 msrc
5022286 msrc
5022303 msrc
5022338 msrc
5022339 msrc
5022340 msrc
5022343 msrc
5022346 msrc
5022348 msrc
5022352 msrc
5022353 msrc

NVD-tagged references (2)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21675 secure@microsoft.com
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21675 af854a3a-2127-422b-91ae-364da2661108

Remediations (15)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

Adobe Commerce 2.4.7 Security Patch Release Notes | Adobe Commerce

web:experienceleague.adobe.com

Learn about security bug fixes, security enhancements, and other security related updates included in the security patch releases for Adobe Commerce version 2.4.7.

2026-06-04 04:13 UTC
NVD - Vulnerabilities

web:nvd.nist.gov

Vulnerabilities All vulnerabilities in the NVD have been assigned a CVE identifier and thus, abide by the definition below. CVE defines a vulnerability as: "A weakness in the computational logic (e.g., code) found in software and hardware components that, when exploited, results in a negative impact to confidentiality, integrity, or availability. Mitigation of the vulnerabilities in this ...

2026-06-04 04:13 UTC
Patch Tuesday - November 2025 - Rapid7

web:www.rapid7.com

Microsoft is publishing 66 new vulnerabilities today, which is far fewer than we've come to expect in recent months. However, the lone zero-day vulnerability this month demands attention.

2026-06-04 04:13 UTC
‎Google Gemini

web:gemini.google.com

Meet Gemini, Google's AI assistant. Get help with writing, planning, brainstorming, and more. Experience the power of generative AI.

2026-06-04 04:13 UTC
Security Updates - Red Hat Customer Portal

web:access.redhat.com

Learn about our open source products, services, and company. You are here

2026-06-04 04:13 UTC
Microsoft Releases Mitigation for YellowKey BitLocker Bypass CVE-2026 ...

web:thehackernews.com

Microsoft on Tuesday released a mitigation for a BitLocker bypass vulnerability named YellowKey following its public disclosure last week. The zero-day flaw, now tracked as CVE -2026-45585, carries a CVSS score of 6.8.

2026-05-22 05:45 UTC
Google Translate

web:translate.google.com

Google's service, offered free of charge, instantly translates words, phrases, and web pages between English and over 100 other languages.

2026-05-22 05:45 UTC
Microsoft Rushes Out Emergency Mitigation For 'YellowKey ... - LinkedIn

web:www.linkedin.com

Microsoft Security Response Center has issued an emergency mitigation for a newly disclosed BitLocker bypass vulnerability known as "YellowKey," after security researchers publicly released ...

2026-05-22 05:45 UTC
Critical Patch Updates, Critical Security Patch Updates ... - Oracle

web:www.oracle.com

Critical Security Patch Updates Critical Security Patch Updates provide security patches for supported Oracle on-premises products. A Critical Security Patch Update provides targeted, high-priority security fixes in a smaller, more focused format, making them easier to apply with minimal disruption.

2026-05-22 05:45 UTC
Microsoft Rolls Out Mitigations for 'YellowKey' BitLocker ...

web:www.securityweek.com

Microsoft has announced mitigations for CVE -2026-45585, a BitLocker bypass triggered via FsTx in Windows Recovery.

2026-05-22 05:45 UTC
Patch Tuesday May 2026: Security Updates & CVE Analysis

web:zecurit.com

Get the complete breakdown of Microsoft's May 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .

2026-05-22 05:45 UTC
Microsoft Patch Tuesday May 2026 - 120 Vulnerabilities Fixed, Including ...

web:cybersecuritynews.com

Microsoft's May 2026 Patch Tuesday lands with a heavy enterprise focus, fixing 120 vulnerabilities across Windows, Office, Azure, developer tools, and Microsoft 365 apps, including 29 remote code execution (RCE) flaws rated Critical.

2026-05-22 05:45 UTC
Six Patch Management Best Practices [Updated 2026]

web:heimdalsecurity.com

Explore six essential patch management best practices for 2026 to keep your systems secure, up to date, and protected from vulnerabilities.

2026-05-22 05:45 UTC
Security Update Guide - Microsoft

web:portal.msrc.microsoft.com

The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.

2026-05-22 05:45 UTC
Android Security Bulletin—November 2025 - Android Open Source Project

web:source.android.com

Android partners are encouraged to fix all issues in this bulletin and use the latest security patch level. Devices that use the 2025-11-01 security patch level must include all issues associated with that security patch level, as well as fixes for all issues reported in previous security bulletins.

2026-05-22 05:45 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2023-21675.json.

{
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          "product": "Windows 10 Version 1507",
          "vendor": "Microsoft",
          "versions": [
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              "version": "10.0.10240.0",
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          "product": "Windows 10 Version 1607",
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          "product": "Windows Server 2016",
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          "product": "Windows 7 Service Pack 1",
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