CVE-2021-34333

Application crash via BMP buffer double free

Published Jul 13, 2021 · Updated Aug 4, 2024

Double free in BMP_Loader.dll in Siemens JT2Go and Teamcenter Visualization before 13.2 allows attackers to crash the application. The BMP parser insufficiently validates a malformed BMP and frees the same allocated buffer twice, terminating the process. A user must open the crafted file in an affected application; the documented consequence is a local application crash rather than data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability1.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Double free in BMP_Loader.dll in Siemens JT2Go and Teamcenter Visualization before 13.2 allows attackers to crash the application. The BMP parser insufficiently validates a malformed BMP and frees the same allocated buffer twice, terminating the process. A user must open the crafted file in an affected application; the documented consequence is a local application crash rather than data disclosure or modification.

The record

CVE
CVE-2021-34333
Published
Jul 13, 2021
Updated
Aug 4, 2024
Vendor
Siemens
Product
Teamcenter Visualization
Classifications
CWE-415, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 13, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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 < V13.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Siemens · Teamcenter Visualizationversion=All versions < V13.2
Siemens · JT2Goversion=All versions < V13.2

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:N/A:P

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 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-415Double Free
T1204.002User Execution: Malicious File

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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