Read the docs
TI-2021-10053 Aliases CVE-2021-29239GHSA-65fv-prgh-wg7w

CODESYS Development System 3 before 3.5.17.0 displays or executes malicious documents or…

Priority LOW 33CWE-345Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-345.

Summary

CODESYS Development System 3 before 3.5.17.0 displays or executes malicious documents or files embedded in libraries without first checking their validity.

Why it matters now

EPSS 0.00179 7th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:codesys:development_system:*:*:*:*:*:*:*:*3.0 to before 3.5.17.0VulnerableCODESYS
  • cpe:2.3:a:codesys:development_system:*:*:*:*:*:*:*:* Versions 3.0 to before 3.5.17.0 Vulnerable ·CODESYS

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-29239
  2. 2026-10-03 Alias added: GHSA-65fv-prgh-wg7w

References

Advisory 3

  • TI-2019-06497 An issue was discovered in 3S-Smart CODESYS V3 products. CVSS 3.1CRITICAL 9.8
  • TI-2023-03420 CODESYS: Missing integrity check in CODESYS Development System CVSS 3.1HIGH 8.8
  • TI-2022-03868 CODESYS: Exposure of Resource to Wrong Sphere in CODESYS V3 CVSS 3.1HIGH 8.8
  • TI-2021-10055 CODESYS Gateway 3 before 3.5.16.70 has a NULL pointer dereference that may result in a denial of service (DoS). CVSS 3.1HIGH 7.5
  • TI-2026-32408 Incorrect Default Permissions in CODESYS Development System CVSS 4.0HIGH 8.5
  • TI-2026-32407 Incorrect Default Permissions in CODESYS Development System CVSS 4.0HIGH 8.5
See all 42 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences