CVE-2023-21688
📛 CVE Title
NT OS Kernel Elevation of Privilege Vulnerability
Description
NT OS 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-416 - Reserved
- 2022-12-13
- 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-2023-21688.json
- Linked Threat
- CVE-2023-21688 — NT OS 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
- 2023-02-14 20:15:12 UTC
- NVD last modified
- 2026-06-17 05:33:39 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
- 0.0360 (probability of exploitation in next 30 days)
- EPSS percentile
- 88.25% vs all CVEs — higher = more likely to be exploited, as of 2026-07-27
NVD / KEV / EPSS data refreshed 2026-07-28 07:45 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
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-2023-25855 - Assigner
- microsoft
- Published
- Feb 14, 2023, 7:33:28 PM
- Updated
- Jan 1, 2025, 12:41:09 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
- 2.6000
- Vendors
- Microsoft
- Products
-
Windows Server 2008 Service Pack 2 (6.0.6003.0 <6.0.6003.21915)Windows Server 2019 (Server Core installation) (10.0.17763.0 <10.0.17763.4010)Windows 10 Version 1809 (10.0.0 <10.0.17763.4010)Windows Server 2016 (Server Core installation) (10.0.14393.0 <10.0.14393.5717)Windows 10 Version 21H2 (10.0.19043.0 <10.0.19044.2604)Windows 11 version 21H2 (10.0.0 <10.0.22621.1574)Windows Server 2022 (10.0.20348.0 <10.0.20348.1547)Windows Server 2008 R2 Service Pack 1 (6.1.7601.0 <6.1.7601.26366)Windows 11 version 22H2 (10.0.22621.0 <10.0.22621.1265)Windows 10 Version 22H2 (10.0.19045.0 <10.0.19045.2604)Windows Server 2008 R2 Service Pack 1 (Server Core installation) (6.1.7601.0 <6.1.7601.26366)Windows 10 Version 20H2 (10.0.0 <10.0.19042.2604)Windows Server 2012 (Server Core installation) (6.2.9200.0 <6.2.9200.24116)Windows Server 2012 R2 (6.3.9600.0 <6.3.9600.20821)Windows 10 Version 1607 (10.0.14393.0 <10.0.14393.5717)Windows 10 Version 1507 (10.0.10240.0 <10.0.10240.19747)Windows Server 2012 R2 (Server Core installation) (6.3.9600.0 <6.3.9600.20821)Windows Server 2016 (10.0.14393.0 <10.0.14393.5717)Windows 10 Version 1809 (10.0.17763.0 <10.0.17763.4010)Windows Server 2008 Service Pack 2 (6.0.6003.0 <6.0.6003.21915)Windows Server 2019 (10.0.17763.0 <10.0.17763.4010)Windows Server 2012 (6.2.9200.0 <6.2.9200.24116)Windows Server 2008 Service Pack 2 (Server Core installation) (6.0.6003.0 <6.0.6003.21915)
- Aliases
-
GHSA-37v9-32xg-4mwc
ENISA description: NT OS Kernel Elevation of Privilege 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
- 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 More 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
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 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 (28) 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_1507:*:*:*:*:*:*:x64:*cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x86:*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_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.
- NT OS Kernel Elevation of Privilege Vulnerability vendor-advisory
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-2023-21688 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
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-2023-21688 secure@microsoft.com PatchVendor Advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21688 af854a3a-2127-422b-91ae-364da2661108 PatchVendor Advisory
Remediations (17)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:krebsonsecurity.com
Microsoft today pushed updates to fix at least 56 security flaws in its Windows operating systems and supported software. This final Patch Tuesday of 2025 tackles one zero-day bug that is already ...
2026-06-04 05:13 UTC -
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.
2026-06-04 05:13 UTC -
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 05:13 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 05:13 UTC -
web:www.tenable.com
What is patch management? At its core, patch management is the formal process your organization uses to identify, acquire, test, and deploy software updates, or "patches," to your IT assets. Vendors release patches for several reasons: Fix software bugs Improve performance Add new features Fix vulnerabilities that attackers could otherwise exploit A patch can be a minor, single fix (a "hotfix ...
2026-06-04 05:13 UTC -
web:www.minecraft.net
Explore every Minecraft game update, from The Wild to Spring to Life. See features, release dates, and what's coming next in our interactive update timeline.
2026-06-04 05:13 UTC -
web:access.redhat.com
Learn about our open source products, services, and company. You are here
2026-06-04 05:13 UTC -
web:www.sammobile.com
The February 2026 security patch addresses a total of 37 security vulnerabilities. Of these, 25 fixes are provided by Google for the Android operating system, while the remaining 12 were developed by Samsung. Most of the fixes apply to Galaxy smartphones and tablets running Android 14, Android 15, and Android 16, with one fix also targeting devices still on Android 13.
2026-05-22 05:45 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 05:45 UTC -
web:www.zdnet.com
Install Microsoft's emergency Windows patch now - what it fixes and why it was rushed out Microsoft issued an out-of-band fix after its latest update introduced a nasty surprise.
2026-05-22 05:45 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 05:45 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 05:45 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 05:45 UTC -
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 -
web:www.bleepingcomputer.com
Microsoft has released out-of-band (OOB) security updates to patch a critical-severity Windows Server Update Service (WSUS) vulnerability with publicly available proof-of-concept exploit code.
2026-05-22 05:45 UTC -
web:www.computerworld.com
Here's a look at the most recent Patch Tuesday release from Microsoft as well as a collection of recent updates so you can track what's changed.
2026-05-22 05:45 UTC -
web:www.ninjaone.com
Catalog of Microsoft KB updates with insights on performance & user sentiment. Find out what's working, what's not, & make informed decisions.
2026-05-22 05:45 UTC
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Raw JSON
The full cvelistV5 record. Download as CVE-2023-21688.json.
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"product": "Windows 10 Version 22H2",
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"product": "Windows 10 Version 1507",
"vendor": "Microsoft",
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"version": "10.0.10240.0",
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"product": "Windows 10 Version 1607",
"vendor": "Microsoft",
"versions": [
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"status": "affected",
"version": "10.0.14393.0",
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},
{
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],
"product": "Windows Server 2016",
"vendor": "Microsoft",
"versions": [
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"product": "Windows Server 2016 (Server Core installation)",
"vendor": "Microsoft",
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"product": "Windows Server 2008 Service Pack 2",
"vendor": "Microsoft",
"versions": [
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"product": "Windows Server 2008 R2 Service Pack 1",
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