How severe is CVE-2023-21823?

CVE-2023-21823 has a CVSS 3.1 base score of 7.8 (HIGH). EPSS estimates a 5.6% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2023-21823: Windows Graphics Component Remote Code Execution

CISA Known Exploited Vulnerabilities

Microsoft Windows Graphic Component Privilege Escalation Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2023-02-14

Remediation due

2023-03-07

Required action
Apply updates per vendor instructions.

CISA notes
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-21823; https://nvd.nist.gov/vuln/detail/CVE-2023-21823

Description

Windows Graphics Component Remote Code Execution Vulnerability

Severity

CVSS 3.1 · CNA7.8 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

SSVC · CISA-ADP

Exploitationactive

Automatableno

Technical impacttotal

Exploitation Context

as of October 13, 2026

All KEV statistics→

CISA added CVE-2023-21823 to the KEV catalog on the day its CVE record was published. The median for entries added in 2023 is 12 days.
It is one of 390 Microsoft entries in the CISA KEV catalog, and one of 27 added in 2023.
Its current EPSS score (5.6%) is higher than that of 19% of CISA KEV entries.

Affected Products

Vendor	Product	Affected versions
Microsoft	Microsoft Microsoft Office for Android	16.0.1 to <16.0.16130.20156
Microsoft	Microsoft Microsoft Office for iOS	2.0.0 to <2.70.23021003
Microsoft	Microsoft Microsoft Office for Universal	16.0.1 to <16.0.14326.21330
Microsoft	Microsoft Windows 10 Version 1507	10.0.10240.0 to <10.0.10240.19747
Microsoft	Microsoft Windows 10 Version 1607	10.0.14393.0 to <10.0.14393.5717
Microsoft	Microsoft Windows 10 Version 1809	10.0.17763.0 to <10.0.17763.4010
Microsoft	Microsoft Windows 10 Version 1809	10.0.0 to <10.0.17763.4010
Microsoft	Microsoft Windows 10 Version 20H2	10.0.0 to <10.0.19042.2604
Microsoft	Microsoft Windows 10 Version 21H2	10.0.19043.0 to <10.0.19044.2604
Microsoft	Microsoft Windows 10 Version 22H2	10.0.19045.0 to <10.0.19045.2604
Microsoft	Microsoft Windows 11 version 21H2	10.0.0 to <10.0.22621.1574
Microsoft	Microsoft Windows 11 version 22H2	10.0.22621.0 to <10.0.22621.1265
Microsoft	Microsoft Windows Server 2008 Service Pack 2	6.0.6003.0 to <6.0.6003.21915
Microsoft	Microsoft Windows Server 2008 R2 Service Pack 1	6.1.7601.0 to <6.1.7601.26366
Microsoft	Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation)	6.1.7601.0 to <6.1.7601.26366
Microsoft	Microsoft Windows Server 2008 Service Pack 2	6.0.6003.0 to <6.0.6003.21915
Microsoft	Microsoft Windows Server 2008 Service Pack 2 (Server Core installation)	6.0.6003.0 to <6.0.6003.21915
Microsoft	Microsoft Windows Server 2012	6.2.9200.0 to <6.2.9200.24116
Microsoft	Microsoft Windows Server 2012 (Server Core installation)	6.2.9200.0 to <6.2.9200.24116
Microsoft	Microsoft Windows Server 2012 R2	6.3.9600.0 to <6.3.9600.20821
Microsoft	Microsoft Windows Server 2012 R2 (Server Core installation)	6.3.9600.0 to <6.3.9600.20821
Microsoft	Microsoft Windows Server 2016	10.0.14393.0 to <10.0.14393.5717
Microsoft	Microsoft Windows Server 2016 (Server Core installation)	10.0.14393.0 to <10.0.14393.5717
Microsoft	Microsoft Windows Server 2019	10.0.17763.0 to <10.0.17763.4010
Microsoft	Microsoft Windows Server 2019 (Server Core installation)	10.0.17763.0 to <10.0.17763.4010
Microsoft	Microsoft Windows Server 2022	10.0.20348.0 to <10.0.20348.1547

References

1 Links

Vendor advisories

Windows Graphics Component Remote Code Execution Vulnerability

Record Details

Published

2023-02-14

Last updated

2026-08-19

Assigner (CNA)

microsoft

Credited to

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Tool categories

Fuzzing Binary Exploitation

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.

CVE-2023-21823