Is CVE-2023-21823 actively exploited?

Yes. KEV Intelligence tracks CVE-2023-21823 as a known exploited vulnerability. Confidence is confirmed.

What exploitation activity has KEV Intelligence observed?

KEV Intelligence has not yet recorded sensor-observed exploitation attempts for CVE-2023-21823. Our sensors continue to monitor for activity targeting this CVE.

Which versions are affected?

CVE-2023-21823 affects Microsoft Microsoft Office for Android and 24 other products. KEV Intelligence lists 26 version rows; examples include 16.0.1 to < 16.0.16130.20156, 16.0.1 to < 16.0.14326.21330, and 2.0.0 to < 2.70.23021003.

Yes. CVE-2023-21823 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

CVE-2023-21823 Exploited in the Wild — Microsoft Office for Android, Microsoft Office for Universal, Microsoft Office for iOS, Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation), Windows Server 2022, Windows 10 Version 20H2, Windows 11 version 21H2, Windows 10 Version 21H2, Windows 11 version 22H2, Windows 10 Version 22H2, Windows 10 Version 1507, Windows 10 Version 1607, Windows Server 2016, Windows Server 2016 (Server Core installation), Windows Server 2008 Service Pack 2, Windows Server 2008 Service Pack 2 (Server Core installation), Windows Server 2008 Service Pack 2, Windows Server 2008 R2 Service Pack 1, Windows Server 2008 R2 Service Pack 1 (Server Core installation), Windows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation)

Q: What is CVE-2023-21823?

CVE-2023-21823 is Windows Graphics Component Remote Code Execution Vulnerability affecting Microsoft Microsoft Office for Android and 24 other products.

Q: How should organizations remediate it?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Q: Is it in CISA KEV?

Yes. CVE-2023-21823 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2023-21823 is Windows Graphics Component Remote Code Execution Vulnerability affecting Microsoft Microsoft Office for Android and 24 other products.

Is it exploited?

Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is confirmed.

Who is affected?

Microsoft / Microsoft Office for Android affected before 16.0.16130.20156.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

Windows Graphics Component Remote Code Execution Vulnerability

Vendor Product Affected Status

Microsoft Microsoft Office for Android Before 16.0.16130.20156 Affected

Microsoft Microsoft Office for Universal Before 16.0.14326.21330 Affected

Microsoft Microsoft Office for iOS Before 2.70.23021003 Affected

Microsoft Windows 10 Version 1809 Before 10.0.17763.4010 Affected

Microsoft Windows Server 2019 Before 10.0.17763.4010 Affected

Microsoft Windows Server 2019 (Server Core installation) Before 10.0.17763.4010 Affected

Microsoft Windows Server 2022 Before 10.0.20348.1547 Affected

Microsoft Windows 10 Version 20H2 Before 10.0.19042.2604 Affected

Microsoft Windows 11 version 21H2 Before 10.0.22621.1574 Affected

Microsoft Windows 10 Version 21H2 Before 10.0.19044.2604 Affected

Microsoft Windows 11 version 22H2 Before 10.0.22621.1265 Affected

Microsoft Windows 10 Version 22H2 Before 10.0.19045.2604 Affected

Microsoft Windows 10 Version 1507 Before 10.0.10240.19747 Affected

Microsoft Windows 10 Version 1607 Before 10.0.14393.5717 Affected

Microsoft Windows Server 2016 Before 10.0.14393.5717 Affected

Microsoft Windows Server 2016 (Server Core installation) Before 10.0.14393.5717 Affected

Microsoft Windows Server 2008 Service Pack 2 Before 6.0.6003.21915 Affected

Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) Before 6.0.6003.21915 Affected

Microsoft Windows Server 2008 Service Pack 2 Before 6.0.6003.21915 Affected

Microsoft Windows Server 2008 R2 Service Pack 1 Before 6.1.7601.26366 Affected

Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) Before 6.1.7601.26366 Affected

Microsoft Windows Server 2012 Before 6.2.9200.24116 Affected

Microsoft Windows Server 2012 (Server Core installation) Before 6.2.9200.24116 Affected

Microsoft Windows Server 2012 R2 Before 6.3.9600.20821 Affected

View vendor advisory

Published: 14 Feb 2023
Exploitation Reported: 14 Feb 2023
Attack vector: Local
Complexity: Low
Privileges: Low
User interaction: None

CVE References

CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2023-21823
Windows Graphics Component Remote Code Execution Vulnerability msrc.microsoft.com · Vendor Advisory https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21823

Exploitation evidence

Why KEV Intelligence marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CISA

Recorded 14 Feb 2023

Independent exploitation attestation added to the KEV Intelligence record.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.

Learn about Pro API access

Source	Added
CISA First	2023-02-14 00:00 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets: 0
User-Agents: 0

Raw values available in Pro and Enterprise.

Scanner coverage

Nessus template detected 02 Jun 2025.

View Nessus template

Virtual patch status

No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner	Reference	Detected
Nessus	https://www.tenable.com/plugins/nessus/171453	02 Jun 2025

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

7.8 High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C

EPSS

5.6%

Weaknesses

Integer Overflow or Wraparound CWE-190

Timeline

From disclosure to observed exploitation

02 Jun 2025
Nessus plugin available

Scanner coverage available
14 Feb 2023
CVE published

Vulnerability disclosed publicly
14 Feb 2023
Added to CISA KEV

Listed in the CISA Known Exploited Vulnerabilities catalog
16 Dec 2022
CVE ID reserved

Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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Evidence confidence and provenance
First-party sensor telemetry
PoC and scanner references
Affected versions and enrichment
Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2023-21823

Free JSON includes basic KEV fields

{
  "cve_id": "CVE-2023-21823",
  "confidence": "Confirmed",
  "cvss_score": 7.8,
  "cvss_estimated": false,
  "epss_score": 0.05563,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

CVE-2023-21823