CVE-2023-33121

Application crash via crafted CGM file

Published Jun 13, 2023 · Updated Jan 3, 2025

Null pointer dereference in Siemens JT2Go and Teamcenter Visualization allows attackers to crash affected versions with a crafted CGM file. The CGM parser dereferences a null pointer while processing malformed file content. A user must open the malicious file; successful exploitation terminates the affected process and requires the application to be restarted.

CVSS severity3.3
Low
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Null pointer dereference in Siemens JT2Go and Teamcenter Visualization allows attackers to crash affected versions with a crafted CGM file. The CGM parser dereferences a null pointer while processing malformed file content. A user must open the malicious file; successful exploitation terminates the affected process and requires the application to be restarted.

The record

CVE
CVE-2023-33121
Published
Jun 13, 2023
Updated
Jan 3, 2025
Vendor
Siemens
Product
Teamcenter Visualization
Classifications
CWE-476, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 3, 2025Record 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 < V13.2.0.13
  2. Affected versionversion=All versions < V13.3.0.10
  3. Affected versionversion=All versions < V14.0.0.6
  4. Affected versionversion=All versions < V14.1.0.8
  5. Affected versionversion=All versions < V14.2.0.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Siemens · Teamcenter Visualizationversion=All versions < V13.2.0.13; version=All versions < V13.3.0.10; version=All versions < V14.0.0.6; version=All versions < V14.1.0.8; version=All versions < V14.2.0.3
Siemens · JT2Goversion=All versions < V14.2.0.3

Published CVSS scores

3.3Siemens ProductCERTCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

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-476NULL Pointer Dereference
T1204.002User Execution: Malicious File

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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