CVE-2023-30795

Code execution via out-of-bounds JT file read

Published Aug 8, 2023 · Updated Oct 11, 2024

Out-of-bounds reads in Siemens JT Open Toolkit, JT Utilities, and Parasolid allow attackers to execute code via crafted JT files. Their JT parsers read past the end of an allocated structure when processing malformed file content, enabling memory corruption in the current process. Exploitation requires a user to open an untrusted JT file; successful attacks can crash the application or execute code with that process's privileges.

CVSS severity7.8
High
EPSS probability0.22%
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 reads in Siemens JT Open Toolkit, JT Utilities, and Parasolid allow attackers to execute code via crafted JT files. Their JT parsers read past the end of an allocated structure when processing malformed file content, enabling memory corruption in the current process. Exploitation requires a user to open an untrusted JT file; successful attacks can crash the application or execute code with that process's privileges.

The record

CVE
CVE-2023-30795
Published
Aug 8, 2023
Updated
Oct 11, 2024
Vendor
Siemens
Product
JT Utilities
Classifications
CWE-125, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 11, 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=All versions < V13.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Siemens · JT Utilitiesversion=All versions < V13.4
Siemens · Parasolidversion=All versions < V34.0.253; version=All versions < V34.1.243; version=All versions < V35.0.177; version=All versions < V35.1.073
Siemens · JT Open Toolkitversion=All versions < V11.4

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 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-125Out-of-bounds Read
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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