Is CVE-2023-21823 in the CISA KEV catalog?

Yes. CVE-2023-21823 is on the CISA Known Exploited Vulnerabilities list, added 2023-02-14.

What is the CVSS severity of CVE-2023-21823?

CVE-2023-21823 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2023-21823?

CVE-2023-21823 has an EPSS score of 5.56% (92th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2023-21823

HIGHCISA KEVEPSS 92th pctl

7.8

CVSS v3

NVD

Description

Windows Graphics Component Remote Code Execution Vulnerability

CWE-190Integer Overflow

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

5.56%probability of exploitation in 30 days

92ndpercentile

High risk: more likely to be exploited than 92% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Microsoft Windows Graphic Component Privilege Escalation Vulnerability

Microsoft Windows Graphic Component contains an unspecified vulnerability that allows for privilege escalation.

Apply updates per vendor instructions.

Remediation due: 2023-03-07

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-30.