CVE-2023-21816
📛 CVE Title
Windows Active Directory Domain Services API Denial of Service Vulnerability
Description
Windows Active Directory Domain Services API Denial of Service Vulnerability
Overview
- State
- PUBLISHED
- Assigner (CNA)
- microsoft
- CVSS severity
- HIGH
- CVSS score
- 7.5 / 10
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C- Effective score
- 7.5 / 10 HIGH source: CNA overview
- MSRC score
- 7.5 / 10 HIGH MS rating: Important · Denial of Service
- CWE(s)
-
CWE-20 - Reserved
- 2022-12-16
- Published
- 2023-02-14 08:00 UTC
- Last updated
- 2023-02-14 08:00 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2023/21xxx/CVE-2023-21816.json
- Linked Threat
- CVE-2023-21816 — Windows Active Directory Domain Services API Denial of Service 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-2023-25982 - Assigner
- microsoft
- Published
- Feb 14, 2023, 7:33:18 PM
- Updated
- Jan 1, 2025, 12:41:03 AM
- EUVD base score (CVSS 3.1)
-
7.5 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C - EUVD-reported EPSS
- 16.3600
- Vendors
- Microsoft
- Products
-
Windows 10 Version 1809 (10.0.17763.0 <10.0.17763.4010)Windows 11 version 22H2 (10.0.22621.0 <10.0.22621.1265)Windows Server 2008 Service Pack 2 (6.0.6003.0 <6.0.6003.21915)Windows Server 2012 (Server Core installation) (6.2.9200.0 <6.2.9200.24116)Windows Server 2012 R2 (Server Core installation) (6.3.9600.0 <6.3.9600.20821)Windows Server 2008 Service Pack 2 (6.0.6003.0 <6.0.6003.21915)Windows Server 2016 (Server Core installation) (10.0.14393.0 <10.0.14393.5717)Windows Server 2008 Service Pack 2 (Server Core installation) (6.0.6003.0 <6.0.6003.21915)Windows 10 Version 1507 (10.0.10240.0 <10.0.10240.19747)Windows Server 2008 R2 Service Pack 1 (Server Core installation) (6.1.7601.0 <6.1.7601.26366)Windows Server 2022 (10.0.20348.0 <10.0.20348.1547)Windows Server 2016 (10.0.14393.0 <10.0.14393.5717)Windows 10 Version 1809 (10.0.0 <10.0.17763.4010)Windows Server 2012 R2 (6.3.9600.0 <6.3.9600.20821)Windows Server 2012 (6.2.9200.0 <6.2.9200.24116)Windows 10 Version 20H2 (10.0.0 <10.0.19042.2604)Windows Server 2019 (Server Core installation) (10.0.17763.0 <10.0.17763.4010)Windows 10 Version 22H2 (10.0.19045.0 <10.0.19045.2604)Windows 10 Version 1607 (10.0.14393.0 <10.0.14393.5717)Windows 10 Version 21H2 (10.0.19043.0 <10.0.19044.2604)Windows Server 2008 R2 Service Pack 1 (6.1.7601.0 <6.1.7601.26366)Windows 11 version 21H2 (10.0.0 <10.0.22621.1574)Windows Server 2019 (10.0.17763.0 <10.0.17763.4010)
- Aliases
-
GHSA-9w9w-3fwh-4rc6
ENISA description: Windows Active Directory Domain Services API Denial of Service Vulnerability
EUVD references (1)
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 2026-08-11 01:49 UTC (source: CVRF).
- MS severity
- Important
- Impact
- Denial of Service
- MS CVSS base score
- 7.5 / 10 (temporal 6.5)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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-Feb
Microsoft remediations / KB articles (28)
- 5022840 — Vendor Fix / Security Update (fixed build 10.0.17763.4010)
- 5022840 — Update
- 5022842 — Vendor Fix / Security Update (fixed build 10.0.20348.1547)
- 5022842 — Update
- 5022921 — Vendor Fix / Security Hotpatch Update (fixed build 10.0.20348.1540)
- 5022834 — Vendor Fix / Security Update (fixed build 10.0.19042.2604)
- 5022834 — Update
- 5022836 — Vendor Fix / Security Update (fixed build 10.0.22621.1574)
- 5022845 — Vendor Fix / Security Update (fixed build 10.0.22621.1265)
- 5022845 — Update
- 5022858 — Vendor Fix / Security Update (fixed build 10.0.10240.19747)
- 5022838 — Vendor Fix / Security Update (fixed build 10.0.14393.5717)
- 5022890 — Vendor Fix / Monthly Rollup (fixed build 6.0.6003.21915)
- 5022890 — Update
- 5022893 — Vendor Fix / Security Only (fixed build 6.0.6003.21915)
- 5022893 — Update
- 5022872 — Vendor Fix / Monthly Rollup (fixed build 6.1.7601.26366)
- 5022872 — Update
- 5022874 — Vendor Fix / Security Only (fixed build 6.1.7601.26366)
- 5022874 — Update
- 5022903 — Vendor Fix / Monthly Rollup (fixed build 6.2.9200.24116)
- 5022903 — Update
- 5022895 — Vendor Fix / Security Only (fixed build 6.2.9200.24116)
- 5022895 — Update
- 5022899 — Vendor Fix / Monthly Rollup (fixed build 6.3.9600.20821)
- 5022899 — Update
- 5022894 — Vendor Fix / Security Only (fixed build 6.3.9600.20821)
- 5022894 — Update
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 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 |
Vendor references (1)
References embedded in the original CVE record by the assigning CNA.
Web references (28)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
- 5022834 msrc
- 5022836 msrc
- 5022838 msrc
- 5022840 msrc
- 5022842 msrc
- 5022845 msrc
- 5022858 msrc
- 5022872 msrc
- 5022874 msrc
- 5022890 msrc
- 5022893 msrc
- 5022894 msrc
- 5022895 msrc
- 5022899 msrc
- 5022903 msrc
- MSRC update guide: CVE-2023-21816 msrc
- 5022834 msrc
- 5022840 msrc
- 5022842 msrc
- 5022845 msrc
- 5022872 msrc
- 5022874 msrc
- 5022890 msrc
- 5022893 msrc
- 5022894 msrc
- 5022895 msrc
- 5022899 msrc
- 5022903 msrc
Remediations (17)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:attack.mitre.org
This mitigation can be implemented through the following measures: Regular Operating System Updates Implementation: Apply the latest Windows security updates monthly using WSUS (Windows Server Update Services) or a similar patch management solution. Configure systems to check for updates automatically and schedule reboots during maintenance ...
2026-06-04 14:15 UTC -
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 14:15 UTC -
web:github.com
Minecraft 1.16 & 1.18+ bugfix/performance mod. Contribute to embeddedt/ModernFix development by creating an account on GitHub.
2026-06-04 14:15 UTC -
web:tuxcare.com
It includes discovering vulnerabilities, evaluating their potential impact, prioritizing remediation efforts (including patching), and confirming the fixes. Patch Management Patch management, on the other hand, is the act of applying the necessary updates to fix known vulnerabilities. It's a critical component of vulnerability management.
2026-06-04 14:15 UTC -
web:www.bleepingcomputer.com
CISA has ordered government agencies to secure their systems against a high-severity Oracle WebLogic Server vulnerability that was patched two years ago and is now actively exploited in attacks.
2026-06-04 14:15 UTC -
web:www.lansweeper.com
Which vulnerabilities, issues, and other things did Microsoft update? Discover what's new using Lansweeper's Patch Tuesday May 2026 summary.
2026-06-04 14:15 UTC -
web:www.oracle.com
This Critical Patch Update contains 441 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 2024 Critical Patch Update: Executive Summary and Analysis.
2026-06-04 14:15 UTC -
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 05:47 UTC -
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.
2026-05-22 05:47 UTC -
web:www.cve.org
At cve .org, we provide the authoritative reference method for publicly known information-security vulnerabilities and exposures
2026-05-22 05:47 UTC -
web:www.experts-exchange.com
Learn more about Resolving Sweet32, Birthday Attacks on Windows Servers Via GPO from the expert community at Experts Exchange
2026-05-22 05:47 UTC -
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 05:47 UTC -
web:www.techrepublic.com
Microsoft's April 2026 Patch Tuesday fixes 165 vulnerabilities, including two zero-days, in one of the company's largest monthly security updates.
2026-05-22 05:47 UTC -
web:www.notebookcheck.net
Microsoft April 2026 Patch Tuesday fixes 167 vulnerabilities, including an actively exploited SharePoint zero-day. Windows 11 KB5083769 and KB5082052 bring new builds and RDP security.
2026-05-22 05:47 UTC -
web:petri.com
Microsoft's April 2026 Patch Tuesday addresses 163 vulnerabilities across Windows and key services, alongside incremental Windows 11 improvements.
2026-05-22 05:47 UTC -
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 05:47 UTC -
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 05:47 UTC
AI Forensic Analysis
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Raw JSON
The full cvelistV5 record. Download as CVE-2023-21816.json.
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