No exploitation reportedFix available

CVE-2021-40158

Q: Is CVE-2021-40158 actively exploited?

Active exploitation of CVE-2021-40158 has not been confirmed. Its EPSS score was 2.9% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2021-40158?

CVE-2021-40158 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2022-01-25
Fixed in2022.2
WeaknessCWE-125

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC

2022-01-2520:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-40158?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-40158?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Autodesk inventor

Branch	Affected	Fixed in	Source
2022.x	≥ 2022, < 2022.2	2022.2	NVD
2019.x	= 2019	no fix published	NVD
2020.x	= 2020	no fix published	NVD
2021.x	= 2021	no fix published	NVD

Autodesk advance steel

Branch	Affected	Fixed in	Source
2022.x	≥ 2022, < 2022.1.2	2022.1.2	NVD

Autodesk autocad

Branch	Affected	Fixed in	Source
2022.x	≥ 2022, < 2022.1.2	2022.1.2	NVD

8 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Autodesk inventor to 2022.2

Advisories and patches

www.autodesk.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2026-10-08
OpenCVESSVC decisionnone—
NVDCVSS 3.17.8read 2026-10-23
NVDCVSS 2.06.8read 2026-10-23
NVDweakness (CWE)CWE-125read 2026-10-23
FIRST EPSSEPSS score2.9 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: 2022-01-25
Last Modified: 2026-10-08
NVD status: Modified

Frequently asked questions

What is CVE-2021-40158?

Is CVE-2021-40158 actively exploited?

Active exploitation of CVE-2021-40158 has not been confirmed. Its EPSS score was 2.9% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-40158?

CVE-2021-40158 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

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