CVE-2022-40640

Code execution via X_B parser under-read

Published Sep 15, 2022 · Updated Aug 3, 2024

Out-of-bounds read in the X_B parser in Ansys SpaceClaim 2022 R1 allows context-dependent attackers to execute code via a crafted file. The parser fails to validate user-supplied X_B data before reading before the start of an allocated data structure. Opening a malicious X_B file or visiting a page that supplies one runs attacker-controlled code in the current SpaceClaim process.

CVSS severity7.8
High
EPSS probability0.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in the X_B parser in Ansys SpaceClaim 2022 R1 allows context-dependent attackers to execute code via a crafted file. The parser fails to validate user-supplied X_B data before reading before the start of an allocated data structure. Opening a malicious X_B file or visiting a page that supplies one runs attacker-controlled code in the current SpaceClaim process.

The record

CVE
CVE-2022-40640
Published
Sep 15, 2022
Updated
Aug 3, 2024
Vendor
Ansys
Product
Ansys SpaceClaim
Classifications
CWE-125, T1204.002, T1203
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?

Compare these published version ranges with your installed build and any vendor patches.

  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

7.8Zero Day InitiativeCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS: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-125Out-of-bounds Read
T1204.002Malicious File
T1203Exploitation for Client Execution

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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