CVE-2023-21746

CVEs › CVE-2023-21746

Description

Windows NTLM 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): —
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-2023-21746.json
Linked Threat: CVE-2023-21746 — Windows NTLM Elevation of Privilege Vulnerability

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-2023-25913
Assigner: microsoft
Published: Jan 10, 2023, 12:00:00 AM
Updated: Jan 1, 2025, 12:35:58 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: 54.3100
Vendors: Microsoft
Products: Windows 10 Version 20H2 (10.0.0 <10.0.19042.2486)

Windows Server 2012 R2 (6.3.9600.0 <6.3.9600.20778)

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 2019 (10.0.17763.0 <10.0.17763.3887)

Windows 7 Service Pack 1 (6.1.0 <6.1.7601.26321)

Windows Server 2012 (6.2.9200.0 <6.2.9200.24075)

Windows 10 Version 1507 (10.0.10240.0 <10.0.10240.19685)

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

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

Windows 10 Version 21H2 (10.0.19043.0 <10.0.19044.2486)

Windows 10 Version 22H2 (10.0.19045.0 <10.0.19045.2486)

Windows Server 2022 (10.0.20348.0 <10.0.20348.1487)

Windows 11 version 21H2 (10.0.0 <10.0.22000.1455)

Windows 8.1 (6.3.0 <6.3.9600.20778)

Windows 7 (6.1.0 <6.1.7601.26321)

Windows 10 Version 1809 (10.0.17763.0 <10.0.17763.3887)

Windows 10 Version 1809 (10.0.0 <10.0.17763.3887)

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

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

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

Windows Server 2016 (10.0.14393.0 <10.0.14393.5648)
Aliases: GHSA-vxg3-frf4-qwph

ENISA description: Windows NTLM Elevation of Privilege Vulnerability

EUVD references (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21746

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 01:00 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;Older Software Release:Exploitation Less Likely;DOS:N/A
Release: 2023-Jan

Microsoft remediations / KB articles (22)

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
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 (23)

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 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

Vendor references (1)

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

Windows NTLM Elevation of Privilege Vulnerability vendor-advisory

Web references (23)

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
5022343 msrc
5022346 msrc
5022348 msrc
5022352 msrc
MSRC update guide: CVE-2023-21746 msrc
5022282 msrc
5022286 msrc
5022303 msrc
5022338 msrc
5022339 msrc
5022343 msrc
5022346 msrc
5022348 msrc
5022352 msrc

Remediations (16)

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

‎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 09:14 UTC
Patch Tuesday - March 2026 - Rapid7

web:www.rapid7.com

Microsoft is publishing 77 vulnerabilities this Patch Tuesday, including two publicly disclosed zero-day vulnerabilities.

2026-06-04 09:14 UTC
Security Update Guide - Microsoft

web:msrc.microsoft.com

The Microsoft Security Response Center (MSRC) investigates all reports of security vulnerabilities affecting Microsoft products and services, and provides the information here as part of the ongoing effort to help you manage security risks and help keep your systems protected.

2026-06-04 09:14 UTC
Windows 11 KB5083769 update triggers BitLocker recovery | Windows Central

web:www.windowscentral.com

A faulty BitLocker configuration is forcing some PCs into BitLocker recovery mode after the April 2026 update, but there's a workaround to resolve this issue.

2026-06-04 09:14 UTC
NVD - Home

web:nvd.nist.gov

The NVD is the U.S. government repository of standards based vulnerability management data represented using the Security Content Automation Protocol (SCAP). This data enables automation of vulnerability management, security measurement, and compliance. The NVD includes databases of security checklist references, security-related software flaws, product names, and impact metrics. For ...

2026-06-04 09:14 UTC
Oracle Critical Patch Update Advisory - April 2026

web:www.oracle.com

This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

2026-06-04 09:14 UTC
Microsoft's March 2026 update fixes 80+ security vulnerabilities

web:www.pcworld.com

This month's Patch Tuesday brings over 80 fixes for various security vulnerabilities. Fortunately, none are actively being exploited in the wild yet.

2026-05-22 05:46 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 05:46 UTC
I tested Windows 11 March 2026 Updates: Everything new ... - Windows Latest

web:www.windowslatest.com

Windows 11 March 2026 Patch Tuesday update adds Emoji 16.0, Sysmon, network speed test, reliability improvements, and security fixes.

2026-05-22 05:46 UTC
Microsoft and Adobe Patch Tuesday, March 2026 Security Update Review

web:blog.qualys.com

Microsoft has rolled out its March 2026 Patch Tuesday updates, delivering a fresh batch of security fixes designed to keep Windows environments protected from emerging threats.

2026-05-22 05:46 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 05:46 UTC
Microsoft Patch Tuesday March 2026 - 78 Vulnerabilities Fixed ...

web:cybersecuritynews.com

Microsoft released its March 2026 Patch Tuesday security update on March 10, 2026, addressing 78 vulnerabilities across Windows, Microsoft Office, Azure, SQL Server, and .NET. The update includes one actively exploited zero-day vulnerability and multiple Critical-rated flaws demanding immediate attention from security teams. The most urgent fix this month is CVE -2026-21262, the sole zero-day ...

2026-05-22 05:46 UTC
Microsoft Patch Tuesday, March 2026 Edition - Krebs on Security

web:krebsonsecurity.com

Microsoft earlier provided patches to address nine browser vulnerabilities, which are not included in the Patch Tuesday count above.

2026-05-22 05:46 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 05:46 UTC
Microsoft March 2026 Patch Tuesday fixes 2 zero-days, 79 flaws

web:www.bleepingcomputer.com

Today is Microsoft's March 2026 Patch Tuesday with security updates for 79 flaws, including 2 publicly disclosed zero-day vulnerabilities.

2026-05-22 05:46 UTC
February's Patch Tuesday release fixes 59 flaws ... - Computerworld

web:www.computerworld.com

Each month, the team at Readiness analyzes the latest Patch Tuesday updates from Microsoft and provides detailed, actionable testing guidance. The company's Patch Tuesday release for February ...

2026-05-22 05:46 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2023-21746.json.

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