CVE-2021-40158

A maliciously crafted JT file in Autodesk Inventor 2022, 2021, 2020, 2019 and AutoCAD 2022 may be forced to read beyond allocated boundaries when parsing the JT file. This vulnerability in conjunction with other vulnerabilities could lead to code execution in the context of the current process.

Published: 2022-01-25 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-40158 is rated Moderate Risk (53.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.44%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2021-40158

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 0.46% 0.44% -0.02%
2 2025-11-18 0.44% 0.46% +0.02%
3 2025-05-14 — 0.44% —

Full EPSS history (16 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-40158

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2021-40158

Affected software / configurations for CVE-2021-40158

Vendor Product Version Raw CPE
autodesk advance_steel >= 2022, < 2022.1.2 cpe:2.3:a:autodesk:advance_steel:*:*:*:*:*:*:*:*
autodesk autocad >= 2022, < 2022.1.2 cpe:2.3:a:autodesk:autocad:*:*:*:*:*:*:*:*
autodesk autocad_architecture >= 2022, < 2022.1.2 cpe:2.3:a:autodesk:autocad_architecture:*:*:*:*:*:*:*:*
autodesk autocad_electrical >= 2022, < 2022.1.2 cpe:2.3:a:autodesk:autocad_electrical:*:*:*:*:*:*:*:*
autodesk autocad_lt >= 2022, < 2022.1.2 cpe:2.3:a:autodesk:autocad_lt:*:*:*:*:*:*:*:*
autodesk autocad_map_3d >= 2022, < 2022.1.2 cpe:2.3:a:autodesk:autocad_map_3d:*:*:*:*:*:*:*:*
autodesk autocad_mechanical >= 2022, < 2022.1.2 cpe:2.3:a:autodesk:autocad_mechanical:*:*:*:*:*:*:*:*
autodesk autocad_mep >= 2022, < 2022.1.2 cpe:2.3:a:autodesk:autocad_mep:*:*:*:*:*:*:*:*
autodesk autocad_plant_3d >= 2022, < 2022.1.2 cpe:2.3:a:autodesk:autocad_plant_3d:*:*:*:*:*:*:*:*
autodesk civil_3d >= 2022, < 2022.1.2 cpe:2.3:a:autodesk:civil_3d:*:*:*:*:*:*:*:*
autodesk inventor >= 2022, < 2022.2 cpe:2.3:a:autodesk:inventor:*:*:*:*:*:*:*:*
autodesk inventor 2019 cpe:2.3:a:autodesk:inventor:2019:*:*:*:*:*:*:*
autodesk inventor 2020 cpe:2.3:a:autodesk:inventor:2020:*:*:*:*:*:*:*
autodesk inventor 2021 cpe:2.3:a:autodesk:inventor:2021:*:*:*:*:*:*:*

References for CVE-2021-40158

URL Tags
https://www.autodesk.com/trust/security-advisories/adsk-sa-2022-0002 Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-22-281/ Third Party Advisory VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-283/ Third Party Advisory VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-284/ Third Party Advisory VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-285/ Third Party Advisory VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-286/ Third Party Advisory VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-287/ Third Party Advisory VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-288/ Third Party Advisory VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-441/ Third Party Advisory VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-443/ Third Party Advisory VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-444/ Third Party Advisory VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-445/ Third Party Advisory VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-447/ Third Party Advisory VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-448/ Third Party Advisory VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-449/ Third Party Advisory VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-450/ Third Party Advisory VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-451/ Third Party Advisory VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-452/ Third Party Advisory VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-453/ Third Party Advisory VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-454/ Third Party Advisory VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-455/ Third Party Advisory VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-466/ Third Party Advisory VDB Entry
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