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TI-2021-10055 Aliases CVE-2021-29241GHSA-2hc4-qjj9-7p6r

CODESYS Gateway 3 before 3.5.16.70 has a NULL pointer dereference that may result in a denial of service (DoS).

Priority MEDIUM 42CWE-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 · CISA ADP. Fix status from CNA. Impact type from CWE-476.

Summary

CODESYS Gateway 3 before 3.5.16.70 has a NULL pointer dereference that may result in a denial of service (DoS).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.017 77th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

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

CPE configurations NVD · 12

CPEVersionsRoleVendor
cpe:2.3:a:codesys:control_for_beaglebone_sl:*:*:*:*:*:*:*:*3.0 to before 4.0.1.0VulnerableCODESYS
cpe:2.3:a:codesys:control_for_empc-a\/imx6_sl:*:*:*:*:*:*:*:*3.0 to before 4.0.1.0VulnerableCODESYS
cpe:2.3:a:codesys:control_for_iot2000_sl:*:*:*:*:*:*:*:*3.0 to before 4.0.1.0VulnerableCODESYS
cpe:2.3:a:codesys:control_for_linux_sl:*:*:*:*:*:*:*:*3.0 to before 4.0.1.0VulnerableCODESYS
cpe:2.3:a:codesys:control_for_pfc100_sl:*:*:*:*:*:*:*:*3.0 to before 3.5.16.0VulnerableCODESYS
cpe:2.3:a:codesys:control_for_pfc200_sl:*:*:*:*:*:*:*:*3.0 to before 3.5.16.0VulnerableCODESYS
cpe:2.3:a:codesys:control_for_raspberry_pi_sl:*:*:*:*:*:*:*:*3.0 to before 4.0.1.0VulnerableCODESYS
cpe:2.3:a:codesys:control_runtime_system_toolkit:*:*:*:*:*:*:*:*3.0 to before 3.5.16.70VulnerableCODESYS
cpe:2.3:a:codesys:development_system:*:*:*:*:*:*:*:*3.0 to before 3.5.16.70VulnerableCODESYS
cpe:2.3:a:codesys:edge_gateway:*:*:*:*:*:windows:*:*3.0 to before 3.5.16.70VulnerableCODESYS
  • cpe:2.3:a:codesys:control_for_beaglebone_sl:*:*:*:*:*:*:*:* Versions 3.0 to before 4.0.1.0 Vulnerable ·CODESYS
  • cpe:2.3:a:codesys:control_for_empc-a\/imx6_sl:*:*:*:*:*:*:*:* Versions 3.0 to before 4.0.1.0 Vulnerable ·CODESYS
  • cpe:2.3:a:codesys:control_for_iot2000_sl:*:*:*:*:*:*:*:* Versions 3.0 to before 4.0.1.0 Vulnerable ·CODESYS
  • cpe:2.3:a:codesys:control_for_linux_sl:*:*:*:*:*:*:*:* Versions 3.0 to before 4.0.1.0 Vulnerable ·CODESYS
  • cpe:2.3:a:codesys:control_for_pfc100_sl:*:*:*:*:*:*:*:* Versions 3.0 to before 3.5.16.0 Vulnerable ·CODESYS
  • cpe:2.3:a:codesys:control_for_pfc200_sl:*:*:*:*:*:*:*:* Versions 3.0 to before 3.5.16.0 Vulnerable ·CODESYS
  • cpe:2.3:a:codesys:control_for_raspberry_pi_sl:*:*:*:*:*:*:*:* Versions 3.0 to before 4.0.1.0 Vulnerable ·CODESYS
  • cpe:2.3:a:codesys:control_runtime_system_toolkit:*:*:*:*:*:*:*:* Versions 3.0 to before 3.5.16.70 Vulnerable ·CODESYS
  • cpe:2.3:a:codesys:development_system:*:*:*:*:*:*:*:* Versions 3.0 to before 3.5.16.70 Vulnerable ·CODESYS
  • cpe:2.3:a:codesys:edge_gateway:*:*:*:*:*:windows:*:* Versions 3.0 to before 3.5.16.70 Vulnerable ·CODESYS
Show 2 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:codesys:edge_gateway:*:*:*:*:*:linux:*:*3.0 to before 4.1.0.0VulnerableCODESYS
cpe:2.3:a:codesys:gateway:*:*:*:*:*:*:*:*3.0 to before 3.5.16.70VulnerableCODESYS
  • cpe:2.3:a:codesys:edge_gateway:*:*:*:*:*:linux:*:* Versions 3.0 to before 4.1.0.0 Vulnerable ·CODESYS
  • cpe:2.3:a:codesys:gateway:*:*:*:*:*:*:*:* Versions 3.0 to before 3.5.16.70 Vulnerable ·CODESYS

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-29241
  2. 2026-10-03 Alias added: GHSA-2hc4-qjj9-7p6r

References

Advisory 3

  • TI-2019-06497 An issue was discovered in 3S-Smart CODESYS V3 products. CVSS 3.1CRITICAL 9.8
  • TI-2018-07501 Improper access control in 3S-Smart Software Solutions GmbH CODESYS Control V3 products… CVSS 3.0CRITICAL 9.8
  • TI-2022-23467 CODESYS: Multiple products prone to out-of-bounds write CVSS 3.1HIGH 8.8
  • TI-2022-23479 CODESYS: Multiple products prone to Improper Input Validation CVSS 3.1HIGH 7.5
  • TI-2022-23478 CODESYS: Multiple products prone to stack based out-of-bounds write CVSS 3.1HIGH 8.8
  • TI-2022-23477 CODESYS: Multiple products prone to stack based out-of-bounds write CVSS 3.1HIGH 8.8
See all 49 →

Sources

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