CVE-2023-23390

Code execution via malformed OBJ file parsing

Published Feb 14, 2023 · Updated Aug 19, 2026

Heap-based buffer overflow in Microsoft 3D Builder before 20.0.2.0 allows remote attackers to execute code via a crafted OBJ file. The OBJ file parser fails to validate user-supplied data before processing it, causing memory corruption within the application process. Exploitation requires the target to visit a malicious page or open the file, and successful code runs at the application's low-integrity level.

CVSS severity7.8
High
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in Microsoft 3D Builder before 20.0.2.0 allows remote attackers to execute code via a crafted OBJ file. The OBJ file parser fails to validate user-supplied data before processing it, causing memory corruption within the application process. Exploitation requires the target to visit a malicious page or open the file, and successful code runs at the application's low-integrity level.

The record

CVE
CVE-2023-23390
Published
Feb 14, 2023
Updated
Aug 19, 2026
Vendor
Microsoft
Product
3D Builder
Classifications
CWE-122, T1203, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=20.0.0 <20.0.2.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Microsoft · 3D Builderversion=20.0.0 <20.0.2.0

Published CVSS scores

7.8Microsoft CorporationCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
T1203Exploitation for Client Execution
T1204.002Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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