CVE-2021-38405

Code execution via PDF parser out-of-bounds write

Published Nov 21, 2023 · Updated Aug 4, 2024

Out-of-bounds write in affected Siemens JT2Go and Teamcenter Visualization releases allows remote attackers to execute code via a crafted PDF. The Datalogics APDFL PDF parser writes crafted data past the end of an allocated buffer, corrupting process memory. Exploitation requires a user to open the malicious file; successful exploitation runs attacker-controlled code with the current process's privileges.

CVSS severity7.8
High
EPSS probability1.27%
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 write in affected Siemens JT2Go and Teamcenter Visualization releases allows remote attackers to execute code via a crafted PDF. The Datalogics APDFL PDF parser writes crafted data past the end of an allocated buffer, corrupting process memory. Exploitation requires a user to open the malicious file; successful exploitation runs attacker-controlled code with the current process's privileges.

The record

CVE
CVE-2021-38405
Published
Nov 21, 2023
Updated
Aug 4, 2024
Vendor
Siemens
Product
Teamcenter Visualization
Classifications
CWE-119, CWE-787, T1204.002, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 21, 2023CVE 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

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=12.4 <12.4.0.13
  2. Affected versionversion=13.1 <13.1.0.8
  3. Affected versionversion=13.2 <13.2.0.7
  4. Affected versionversion=13.3 <13.3.0.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Siemens · Teamcenter Visualizationversion=12.4 <12.4.0.13; version=13.1 <13.1.0.8; version=13.2 <13.2.0.7; version=13.3 <13.3.0.1
Siemens · JT2Goversion=0 <13.2.0.7

Published CVSS scores

7.8ICS-CERTCVSS: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-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-787Out-of-bounds Write
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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