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CVE Record

CVE-2021-29240: The Package Manager of CODESYS Development System 3 before 3.5.17.0 does not check the validity of packages...

The Package Manager of CODESYS Development System 3 before 3.5.17.0 does not check the validity of packages before installation and may be used to install CODESYS packages with malicious content.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2021-29240 affects the CODESYS Development System 3 Package Manager before 3.5.17.0. It could install packages without validating them, allowing malicious package content to enter an engineering workstation. The public bundle does not provide a CVSS score, CWE, or evidence of active exploitation.

Executive priority

Prioritize this where CODESYS is used in industrial engineering environments. It is not KEV-listed, but malicious package installation could affect trusted development workflows and downstream operational technology projects.

Technical view

The issue is an insufficient package-validity check in the CODESYS Development System 3 Package Manager before version 3.5.17.0. The stated impact is installation of CODESYS packages containing malicious content. The sources do not describe exploit prerequisites, affected platforms beyond CODESYS Development System 3, or package validation mechanics.

Likely exposure

Organizations using CODESYS Development System 3 versions earlier than 3.5.17.0 are the likely exposure group. Risk is concentrated on engineering workstations or build environments where CODESYS packages are installed.

Exploitation context

The provided sources do not report active exploitation, and the CVE is not marked as CISA KEV. The realistic concern is malicious or untrusted CODESYS package installation, especially where package provenance controls are weak.

Researcher notes

The public metadata is sparse: no CVSS, CWE, exploit detail, or detailed affected CPEs are provided. Analysis should stay limited to CODESYS Development System 3 before 3.5.17.0 and Package Manager package-validity checks.

Mitigation direction

  • Upgrade CODESYS Development System 3 to 3.5.17.0 or later where applicable.
  • Check current CODESYS vendor security guidance before deploying remediation.
  • Restrict package installation to trusted sources and authorized engineering staff.
  • Review recently installed CODESYS packages for provenance and business need.

Validation and detection

  • Inventory CODESYS Development System 3 installations and record exact versions.
  • Identify any installations running versions earlier than 3.5.17.0.
  • Review CODESYS package installation history for unexpected or untrusted packages.
  • Confirm remediation status against the official CODESYS security report.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2021-29240 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.