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NVD / CVE Program· CNA autodesk

CVE-2021-40159: An Information Disclosure vulnerability for JT files in Autodesk Inventor 2022, 2021, 2020, 2019 in conjunction with other vulnerabilities m

Noroxi assessment

Priority: Monitor (action score 32/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 2.2% (FIRST EPSS); higher than 83.3% of all records.
  • Someone with local access to the system can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

An Information Disclosure vulnerability for JT files in Autodesk Inventor 2022, 2021, 2020, 2019 in conjunction with other vulnerabilities may lead to code execution through maliciously crafted JT files in the context of the current process.

HighCVSS 7.8 · v3.1—No exploit No fix recorded
Published
Jan 25, 2022
Updated
Oct 8, 2026
EPSS
2.2% · 83th percentile

Report tools

JSON

Action score

32

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 2.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2021-40159

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
autodeskadvance steel
autodeskautocad
autodeskautocad architecture
autodeskautocad electrical
autodeskautocad lt
autodeskautocad map 3d
autodeskautocad mechanical
autodeskautocad mep
autodeskautocad plant 3d
autodeskcivil 3d
autodeskinventor

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • autodesk advance steel2022 and later · before 2022.1.2
  • autodesk autocad2022 and later · before 2022.1.2
  • autodesk autocad architecture2022 and later · before 2022.1.2
  • autodesk autocad electrical2022 and later · before 2022.1.2
  • autodesk autocad lt2022 and later · before 2022.1.2
  • autodesk autocad map 3d2022 and later · before 2022.1.2
  • autodesk autocad mechanical2022 and later · before 2022.1.2
  • autodesk autocad mep2022 and later · before 2022.1.2
  • autodesk autocad plant 3d2022 and later · before 2022.1.2
  • autodesk civil 3d2022 and later · before 2022.1.2
  • autodesk inventor2019
  • autodesk inventor2020
  • autodesk inventor2021
  • autodesk inventor2022

Versions reported by the vendor

Affected version ranges reported by the assigning authority (autodesk). Independent of NVD's CPE analysis and usually ahead of it.

  • n/a Inventor

    • 2022, 2021, 2020, 2019affected

Same product

autodesk: all records

Other highest-scoring records for the same primary product.

  • CVE-2021-40158A maliciously crafted JT file in Autodesk Inventor 2022, 2021, 2020, 2019 and AutoCAD 2022 may be forced to read beyond allocated boundaries
    32Monitor
  • CVE-2021-27042A maliciously crafted DWG file can be used to write beyond the allocated buffer while parsing DWG files.
    32Monitor
  • CVE-2021-27041A maliciously crafted DWG file can be used to write beyond the allocated buffer while parsing DWG files.
    32Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2021-27040Jun 25, 2021 · A maliciously crafted DWG file can be forced to read beyond allocated boundaries when parsing the DWG file.
    14Monitor
  • ← EarlierCVE-2021-27043Jun 25, 2021 · An Arbitrary Address Write issue in the Autodesk DWG application can allow a malicious user to leverage the application to write in unexpect
    31Monitor
  • Later →CVE-2022-25789Apr 11, 2022 · A maliciously crafted DWF, 3DS and DWFX files in Autodesk AutoCAD 2022, 2021, 2020, 2019 can be used to trigger use-after-free vulnerability
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor

CVSS vector

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

nvd-primary

Root cause

The extension requests broader permissions than its function needs and sends the data it collects out for purposes beyond its stated function.

The bug in code

The whole CWE-200 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

json
{  "permissions": ["tabs", "<all_urls>"],  "background": { "service_worker": "analytics.js" }}

Fixed

json
{  "permissions": ["activeTab"],  "host_permissions": ["https://yildiz.example/*"]}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. SSVC exploitation— → none

For records you follow, these changes also arrive as notifications. →

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records