CVE-2022-39157

Code execution via X_T parser over-read

Published Nov 8, 2022 · Updated Apr 21, 2025

Out-of-bounds read in affected Siemens Parasolid and Simcenter Femap releases allows remote attackers to execute code through a crafted X_T file. The X_T parser fails to validate user-supplied data before reading past an allocated structure, affecting Parasolid before 34.0.254, 34.1.244, or 35.0.184 and Simcenter Femap before 2023.1. Execution requires a user to open the malicious file and runs only in the context of the current process.

CVSS severity7.8
High
EPSS probability0.24%
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 affected Siemens Parasolid and Simcenter Femap releases allows remote attackers to execute code through a crafted X_T file. The X_T parser fails to validate user-supplied data before reading past an allocated structure, affecting Parasolid before 34.0.254, 34.1.244, or 35.0.184 and Simcenter Femap before 2023.1. Execution requires a user to open the malicious file and runs only in the context of the current process.

The record

CVE
CVE-2022-39157
Published
Nov 8, 2022
Updated
Apr 21, 2025
Vendor
Siemens
Product
Parasolid
Classifications
CWE-125, T1204.002, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 8, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=All versions < V34.0.252
  2. Affected versionversion=All versions >= V34.0.252 < V34.0.254
  3. Affected versionversion=All versions < V34.1.242
  4. Affected versionversion=All versions >= V34.1.242 < V34.1.244
  5. Affected versionversion=All versions < V35.0.170
  6. Affected versionversion=All versions >= V35.0.170 < V35.0.184

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Siemens · Parasolidversion=All versions < V34.0.252; version=All versions >= V34.0.252 < V34.0.254; version=All versions < V34.1.242; version=All versions >= V34.1.242 < V34.1.244; version=All versions < V35.0.170; version=All versions >= V35.0.170 < V35.0.184
Siemens · Simcenter Femapversion=All versions < V2023.1

Published CVSS scores

7.8Siemens AGCVSS: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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