CVE-2023-28273

Description

Windows Clip Service Elevation of Privilege Vulnerability

Overview

State: PUBLISHED
Assigner (CNA): microsoft
CVSS severity: HIGH
CVSS score: 7.0 / 10
CVSS vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Effective score: 7.0 / 10 HIGH source: CNA overview
MSRC score: 7.0 / 10 HIGH MS rating: Important · Elevation of Privilege
CWE(s): CWE-591
Reserved: 2023-03-13
Published: 2023-04-11 07:00 UTC
Last updated: 2023-04-11 07:00 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2023/28xxx/CVE-2023-28273.json
Linked Threat: CVE-2023-28273 — Windows Clip Service 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: 2023-04-11 21:15:26 UTC
NVD last modified: 2026-06-17 05:47:18 UTC
NVD CVSS v3.1: 7.0 / 10 HIGH source: secure@microsoft.com
NVD CVSS vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability subscore: 1.0 / 10
Impact subscore: 5.9 / 10
EPSS score: 0.0025 (probability of exploitation in next 30 days)
EPSS percentile: 15.91% vs all CVEs — higher = more likely to be exploited, as of 2026-07-27

NVD-assigned CWE(s): CWE-591, CWE-362 (differs from the CNA list above)

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-2023-31980
Assigner: microsoft
Published: Apr 11, 2023, 7:13:50 PM
Updated: Jan 23, 2025, 1:05:11 AM
EUVD base score (CVSS 3.1): 7.0 / 10
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
EUVD-reported EPSS: 0.3400
Vendors: Microsoft
Products: Windows 11 version 22H2 (10.0.22621.0 <10.0.22621.1555)

Windows 10 Version 1607 (10.0.14393.0 <10.0.14393.5850)

Windows Server 2019 (Server Core installation) (10.0.17763.0 <10.0.17763.4252)

Windows 10 Version 21H2 (10.0.19043.0 <10.0.19044.2846)

Windows Server 2016 (10.0.14393.0 <10.0.14393.5850)

Windows 10 Version 1809 (10.0.17763.0 <10.0.17763.4252)

Windows Server 2022 (10.0.20348.0 <10.0.20348.1668)

Windows 10 Version 20H2 (10.0.0 <10.0.19042.2846)

Windows 11 version 21H2 (10.0.0 <10.0.22000.1817)

Windows Server 2019 (10.0.17763.0 <10.0.17763.4252)

Windows Server 2016 (Server Core installation) (10.0.14393.0 <10.0.14393.5850)

Windows 10 Version 1809 (10.0.0 <10.0.17763.4252)

Windows 10 Version 22H2 (10.0.19045.0 <10.0.19045.2846)
Aliases: GHSA-983h-w38c-cwjw

ENISA description: Windows Clip Service Elevation of Privilege Vulnerability

EUVD references (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-28273

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: 7.0 / 10 (temporal 6.1)
CVSS:3.1/AV:L/AC:H/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-Apr

Microsoft remediations / KB articles (11)

5025229 — Vendor Fix / Security Update (fixed build 10.0.17763.4252)
5025229 — Update
5025230 — Vendor Fix / Security Update (fixed build 10.0.20348.1668)
5025230 — Update
5025221 — Vendor Fix / Security Update (fixed build 10.0.19042.2846)
5025221 — Update
5025224 — Vendor Fix / Security Update (fixed build 10.0.22000.1817)
5025224 — Update
5025239 — Vendor Fix / Security Update (fixed build 10.0.22621.1555)
5025239 — Update
5025228 — Vendor Fix / Security Update (fixed build 10.0.14393.5850)

Microsoft FAQ (2)

According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?

Successful exploitation of this vulnerability requires an attacker to win a race condition.

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 (13)

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 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

Affected products — CPE 2.3 (9) 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:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_11_21h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:*
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 Clip Service Elevation of Privilege Vulnerability vendor-advisory

Web references (17)

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

5025221 msrc
5025224 msrc
5025228 msrc
5025229 msrc
5025230 msrc
5025239 msrc
MSRC update guide: CVE-2023-28273 msrc
https://support.microsoft.com/help/5025230 rapid7:support.microsoft.com
https://support.microsoft.com/help/5025239 rapid7:support.microsoft.com
http://cwe.mitre.org/data/definitions/362.html rapid7:cwe.mitre.org
https://www.cve.org/CVERecord?id=CVE-2023-28273 rapid7:www.cve.org
http://cwe.mitre.org/data/definitions/591.html rapid7:cwe.mitre.org
https://attackerkb.com/topics/CVE-2023-28273 rapid7:attackerkb.com
https://support.microsoft.com/help/5025221 rapid7:support.microsoft.com
https://support.microsoft.com/help/5025224 rapid7:support.microsoft.com
https://support.microsoft.com/help/5025228 rapid7:support.microsoft.com
https://support.microsoft.com/help/5025229 rapid7:support.microsoft.com

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-2023-28273 secure@microsoft.com PatchVendor Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-28273 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.

Security Updates - Red Hat Customer Portal

web:access.redhat.com

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

2026-06-10 01:58 UTC
Patch Management - Tenable, Inc.

web:docs.tenable.com

Remediation and mitigation plans should be created based-off prioritization plans. Most legacy methods employ the CVSS to prioritize which vulnerabilities to remediate first. For example, a typical organizational policy is to remediate all vulnerabilities with a CVSS score of 7 and above.

2026-06-10 01:58 UTC
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.

2026-06-10 01:58 UTC
‎Google Gemini

web:gemini.google.com

Get assistance with writing, planning, learning, and more from Google AI.

2026-06-10 01:58 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 ...

2026-06-10 01:58 UTC
Microsoft Technical Security Notifications

web:www.microsoft.com

Security Update Guide Notifications Microsoft's free Security Update Guide Notifications provide links to security-related software updates and notification of re-released security updates. These notifications are sent via email throughout the month as needed.

2026-06-10 01:58 UTC
KB4869: Vulnerability Resolved in Veeam Backup & Replication 12.3.2.4854

web:www.veeam.com

When a vulnerability is identified, our team promptly develops a patch to address and mitigate the risk. In line with our dedication to transparency, we publicly disclose the vulnerability and provide detailed mitigation information.

2026-06-10 01:58 UTC
Microsoft Patch Tuesday security updates for March 2026 fixed 84 bugs

web:securityaffairs.com

Microsoft Patch Tuesday security updates for March 2026 addressed 84 vulnerabilities across its products. The IT giant addressed flaws across Windows, Office, Edge, Azure, SQL Server, Hyper-V, and ReFS. Including third-party and Chromium updates, the total reaches 94 vulnerabilities. Eight flaws are rated Critical and the rest Important.

2026-05-22 06:12 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 06:12 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 06:12 UTC
March 2026 Patch Tuesday: Updates and Analysis | CrowdStrike

web:www.crowdstrike.com

Microsoft's March 2026 Patch Tuesday addresses 82 CVEs , featuring eight Critical vulnerabilities.

2026-05-22 06:12 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 06:12 UTC
March 2026 Patch Tuesday forecast: Is AI security an oxymoron?

web:www.helpnetsecurity.com

Todd Schell from Ivanti gives his overview of February 2026 and forecast for March 2026 Patch Tuesday. Are you ready to get patching?

2026-05-22 06:12 UTC
Microsoft Issues Massive Windows Patch for 160+ Bugs ... - TechRepublic

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 06:12 UTC
Microsoft March 2026 Patch Tuesday fixes 2 zero-days, Windows 11 ...

web:www.notebookcheck.net

Microsoft's March 2026 Patch Tuesday fixes 79 flaws, including two publicly disclosed zero-days. Windows 11 gets KB5079473 and KB5078883, while Windows 10 receives KB5078885.

2026-05-22 06:12 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 06:12 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 06:12 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2023-28273.json.

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        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-01-23T01:05:11.492Z",
        "orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
        "shortName": "microsoft"
      },
      "references": [
        {
          "name": "Windows Clip Service Elevation of Privilege Vulnerability",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-28273"
        }
      ],
      "title": "Windows Clip Service Elevation of Privilege Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
    "assignerShortName": "microsoft",
    "cveId": "CVE-2023-28273",
    "datePublished": "2023-04-11T19:13:50.830Z",
    "dateReserved": "2023-03-13T22:23:36.182Z",
    "dateUpdated": "2025-01-23T01:05:11.492Z",
    "state": "PUBLISHED"
  },
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}