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TI-2021-14886 Aliases CVE-2021-36764GHSA-qpw7-wx2f-6gc3

In CODESYS Gateway V3 before 3.5.17.10, there is a NULL Pointer Dereference.

Priority LOW 35CWE-476Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-476.

Summary

In CODESYS Gateway V3 before 3.5.17.10, there is a NULL Pointer Dereference. Crafted communication requests may cause a Null pointer dereference in the affected CODESYS products and may result in a denial-of-service condition.

Why it matters now

EPSS 0.01185 67th 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:gateway:*:*:*:*:*:*:*:*3.0 to before 3.5.17.10VulnerableCODESYS
  • cpe:2.3:a:codesys:gateway:*:*:*:*:*:*:*:* Versions 3.0 to before 3.5.17.10 Vulnerable ·CODESYS

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-36764
  2. 2026-10-03 Alias added: GHSA-qpw7-wx2f-6gc3

References

Other 1

  • TI-2019-06497 An issue was discovered in 3S-Smart CODESYS V3 products. CVSS 3.1CRITICAL 9.8
  • TI-2022-13694 Partial string comparison in CODESYS gateway server CVSS 3.1CRITICAL 9.8
  • 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-2018-14204 Improper Communication Address Filtering exists in CODESYS V3 products versions prior V3.5.14.0. CVSS 3.1HIGH 7.5
  • TI-2018-14203 Use of Insufficiently Random Values exists in CODESYS V3 products versions prior V3.5.14.0. CVSS 3.0HIGH 7.5
  • TI-2019-06499 An issue was discovered in 3S-Smart CODESYS V3 products. CVSS 3.1HIGH 7.5
See all 17 →

Sources

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