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TI-2021-12888 Aliases CVE-2021-33485GHSA-mrr3-f59g-2946

CODESYS Control Runtime system before 3.5.17.10 has a Heap-based Buffer Overflow.

Priority MEDIUM 52CWE-122Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-122 and the CVSS impact.

Summary

CODESYS Control Runtime system before 3.5.17.10 has a Heap-based Buffer Overflow.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0136 71st 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
Total

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 · 16

CPEVersionsRoleVendor
cpe:2.3:a:codesys:control:*:*:*:*:*:beaglebone_sl:*:*before 4.2.0.0VulnerableCODESYS
cpe:2.3:a:codesys:control:*:*:*:*:*:empc-a\/imx6_sl:*:*before 4.2.0.0VulnerableCODESYS
cpe:2.3:a:codesys:control:*:*:*:*:*:iot2000_sl:*:*before 4.2.0.0VulnerableCODESYS
cpe:2.3:a:codesys:control:*:*:*:*:*:linux_sl:*:*up to 4.2.0.0VulnerableCODESYS
cpe:2.3:a:codesys:control:*:*:*:*:*:pfc100_sl:*:*before 4.2.0.0VulnerableCODESYS
cpe:2.3:a:codesys:control:*:*:*:*:*:pfc200_sl:*:*before 4.2.0.0VulnerableCODESYS
cpe:2.3:a:codesys:control:*:*:*:*:*:plcnext_sl:*:*before 4.2.0.0VulnerableCODESYS
cpe:2.3:a:codesys:control:*:*:*:*:*:raspberry_pi_sl:*:*before 4.2.0.0VulnerableCODESYS
cpe:2.3:a:codesys:control:*:*:*:*:*:wago_touch_panels_600_sl:*:*before 4.2.0.0VulnerableCODESYS
cpe:2.3:a:codesys:control_rte:*:*:*:*:*:-:*:*before 3.5.17.10VulnerableCODESYS
  • cpe:2.3:a:codesys:control:*:*:*:*:*:beaglebone_sl:*:* Versions before 4.2.0.0 Vulnerable ·CODESYS
  • cpe:2.3:a:codesys:control:*:*:*:*:*:empc-a\/imx6_sl:*:* Versions before 4.2.0.0 Vulnerable ·CODESYS
  • cpe:2.3:a:codesys:control:*:*:*:*:*:iot2000_sl:*:* Versions before 4.2.0.0 Vulnerable ·CODESYS
  • cpe:2.3:a:codesys:control:*:*:*:*:*:linux_sl:*:* Versions up to 4.2.0.0 Vulnerable ·CODESYS
  • cpe:2.3:a:codesys:control:*:*:*:*:*:pfc100_sl:*:* Versions before 4.2.0.0 Vulnerable ·CODESYS
  • cpe:2.3:a:codesys:control:*:*:*:*:*:pfc200_sl:*:* Versions before 4.2.0.0 Vulnerable ·CODESYS
  • cpe:2.3:a:codesys:control:*:*:*:*:*:plcnext_sl:*:* Versions before 4.2.0.0 Vulnerable ·CODESYS
  • cpe:2.3:a:codesys:control:*:*:*:*:*:raspberry_pi_sl:*:* Versions before 4.2.0.0 Vulnerable ·CODESYS
  • cpe:2.3:a:codesys:control:*:*:*:*:*:wago_touch_panels_600_sl:*:* Versions before 4.2.0.0 Vulnerable ·CODESYS
  • cpe:2.3:a:codesys:control_rte:*:*:*:*:*:-:*:* Versions before 3.5.17.10 Vulnerable ·CODESYS
Show 6 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:codesys:control_rte:*:*:*:*:*:beckhoff_cx:*:*before 3.5.17.10VulnerableCODESYS
cpe:2.3:a:codesys:control_runtime_system_toolkit:*:*:*:*:*:*:*:*before 3.5.17.10VulnerableCODESYS
cpe:2.3:a:codesys:control_win_sl:*:*:*:*:*:*:*:*before 3.5.17.10VulnerableCODESYS
cpe:2.3:a:codesys:embedded_target_visu_toolkit:*:*:*:*:*:*:*:*before 3.5.17.10VulnerableCODESYS
cpe:2.3:a:codesys:hmi:*:*:*:*:*:*:*:*before 3.5.17.10VulnerableCODESYS
cpe:2.3:a:codesys:remote_target_visu_toolkit:*:*:*:*:*:*:*:*before 3.5.17.10VulnerableCODESYS
  • cpe:2.3:a:codesys:control_rte:*:*:*:*:*:beckhoff_cx:*:* Versions before 3.5.17.10 Vulnerable ·CODESYS
  • cpe:2.3:a:codesys:control_runtime_system_toolkit:*:*:*:*:*:*:*:* Versions before 3.5.17.10 Vulnerable ·CODESYS
  • cpe:2.3:a:codesys:control_win_sl:*:*:*:*:*:*:*:* Versions before 3.5.17.10 Vulnerable ·CODESYS
  • cpe:2.3:a:codesys:embedded_target_visu_toolkit:*:*:*:*:*:*:*:* Versions before 3.5.17.10 Vulnerable ·CODESYS
  • cpe:2.3:a:codesys:hmi:*:*:*:*:*:*:*:* Versions before 3.5.17.10 Vulnerable ·CODESYS
  • cpe:2.3:a:codesys:remote_target_visu_toolkit:*:*:*:*:*:*:*:* Versions 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-2021-33485
  2. 2026-10-03 Alias added: GHSA-mrr3-f59g-2946

References

Advisory 1

  • TI-2021-14885 In CODESYS V3 web server before 3.5.17.10, files or directories are accessible to External Parties. CVSS 3.1HIGH 7.5

Sources

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