CVE-2022-40644

Remote code execution via X_B parser overflow

Published Sep 15, 2022 · Updated Aug 3, 2024

An out-of-bounds write in Ansys SpaceClaim 2022 R1 allows remote attackers to execute arbitrary code when a user opens a malicious X_B file. The X_B parser fails to validate supplied data before writing past an allocated structure, corrupting process memory. Exploitation requires user interaction, and code runs in the current process with its confidentiality, integrity, and availability impact.

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

An out-of-bounds write in Ansys SpaceClaim 2022 R1 allows remote attackers to execute arbitrary code when a user opens a malicious X_B file. The X_B parser fails to validate supplied data before writing past an allocated structure, corrupting process memory. Exploitation requires user interaction, and code runs in the current process with its confidentiality, integrity, and availability impact.

The record

CVE
CVE-2022-40644
Published
Sep 15, 2022
Updated
Aug 3, 2024
Vendor
Ansys
Product
Ansys SpaceClaim
Classifications
CWE-787, 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

7.8NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8Zero Day InitiativeCVSS:3.0/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1203Exploitation for Client Execution

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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