Code execution via out-of-bounds STP parser write
Published Feb 22, 2024 · Updated Aug 26, 2025
Out-of-bounds writing in ASMIMPORT228A.dll in Autodesk AutoCAD 2021 through 2025 allows attackers to execute code via a crafted STP file. The STP import parser writes beyond an allocated memory boundary when it processes malformed file data, corrupting current-process memory. Exploitation is limited to Windows and requires an end user to interactively choose and import the file; triggering can crash AutoCAD, corrupt data, or execute code with the process user's privileges.
Summary
What happened
Out-of-bounds writing in ASMIMPORT228A.dll in Autodesk AutoCAD 2021 through 2025 allows attackers to execute code via a crafted STP file. The STP import parser writes beyond an allocated memory boundary when it processes malformed file data, corrupting current-process memory. Exploitation is limited to Windows and requires an end user to interactively choose and import the file; triggering can crash AutoCAD, corrupt data, or execute code with the process user's privileges.
The record
- CVE
- CVE-2024-23124
- Published
- Feb 22, 2024
- Updated
- Aug 26, 2025
- Vendor
- Autodesk
- Product
- AutoCAD Mechanical
- Classifications
- CWE-787, T1203, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 22, 2024CVE publishedPublication date reported by the CVE source.
- Aug 26, 2025Record 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.
- Affected versionversion=2021 <2021.1.4
- Affected versionversion=2022 <2022.1.4
- Affected versionversion=2023 <2023.1.5
- Affected versionversion=2024 <2024.1.3
- Affected versionversion=2025 <2025.0.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
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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