CVE-2022-40637

Code execution via JT parser use-after-free

Published Sep 15, 2022 · Updated Aug 3, 2024

Use-after-free in Ansys SpaceClaim 2022 R1 allows remote attackers to execute code when a crafted JT file is opened. The JT parser operates on an object without first validating that the object still exists, allowing reuse of freed memory. A victim must visit a malicious page or open a malicious file, and successful exploitation runs code in the SpaceClaim process context.

CVSS severity7.8
High
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Ansys SpaceClaim 2022 R1 allows remote attackers to execute code when a crafted JT file is opened. The JT parser operates on an object without first validating that the object still exists, allowing reuse of freed memory. A victim must visit a malicious page or open a malicious file, and successful exploitation runs code in the SpaceClaim process context.

The record

CVE
CVE-2022-40637
Published
Sep 15, 2022
Updated
Aug 3, 2024
Vendor
Ansys
Product
Ansys SpaceClaim
Classifications
CWE-416, T1203, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 15, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=2022 R1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Ansys · Ansys SpaceClaimversion=2022 R1

Published CVSS scores

7.0Zero Day InitiativeCVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8NIST National Vulnerability DatabaseCVSS: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-416Use After Free
T1203Exploitation for Client Execution
T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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