How severe is CVE-2023-21781?

CVE-2023-21781 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-21781 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-21781?

CVE-2023-21781 affects Microsoft 3d Builder. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-21781?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-21781 published?

CVE-2023-21781 was published on 2023-01-10 and last updated on 2026-06-17.

CVE-2023-21781

CVE-2023-21781 is a high-severity vulnerability in Microsoft 3d Builder with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-122.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-122
Affected product: Microsoft 3d Builder
Published: 2023-01-10
Last modified: 2026-06-17

Description

3D Builder Remote Code Execution Vulnerability

Frequently asked questions

What is CVE-2023-21781?: 3D Builder Remote Code Execution Vulnerability
How severe is CVE-2023-21781?: CVE-2023-21781 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-21781 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-21781?: CVE-2023-21781 affects Microsoft 3d Builder. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-21781?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-21781 published?: CVE-2023-21781 was published on 2023-01-10 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21781

Affected products (1)

cpe:2.3:a:microsoft:3d_builder:*:*:*:*:*:*:*:*

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