CVE-2021-29242
published 2021-05-03CVE-2021-29242: CODESYS Control Runtime system before 3.5.17.0 has improper input validation. Attackers can send crafted communication packets to change the router's…
PriorityP340high7.3CVSS 3.1
AVNACLPRNUINSUCLILAL
EPSS
1.07%
60.9th percentile
CODESYS Control Runtime system before 3.5.17.0 has improper input validation. Attackers can send crafted communication packets to change the router's addressing scheme and may re-route, add, remove or change low level communication packages.
Affected
23 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| codesys | control_for_beaglebone_sl | >= 3.0 < 4.1.0.0 | 4.1.0.0 |
| codesys | control_for_empc-a_imx6_sl | >= 3.0 < 4.1.0.0 | 4.1.0.0 |
| codesys | control_for_iot2000_sl | >= 3.0 < 4.1.0.0 | 4.1.0.0 |
| codesys | control_for_linux_arm_sl | >= 3.0 < 4.1.0.0 | 4.1.0.0 |
| codesys | control_for_linux_sl | >= 3.0 < 4.1.0.0 | 4.1.0.0 |
| codesys | control_for_pfc100_sl | >= 3.0 < 4.1.0.0 | 4.1.0.0 |
| codesys | control_for_pfc200_sl | >= 3.0 < 4.1.0.0 | 4.1.0.0 |
| codesys | control_for_plcnext_sl | >= 3.0 < 4.1.0.0 | 4.1.0.0 |
| codesys | control_for_raspberry_pi_sl | >= 3.0 < 4.1.0.0 | 4.1.0.0 |
| codesys | control_for_wago_touch_panels_600_sl | >= 3.0 < 4.1.0.0 | 4.1.0.0 |
| codesys | control_rte | >= 3.0 < 3.5.17.0 | 3.5.17.0 |
| codesys | control_runtime_system_toolkit | >= 3.0 < 3.5.17.0 | 3.5.17.0 |
| codesys | control_win | >= 3.0 < 3.5.17.0 | 3.5.17.0 |
| codesys | edge_gateway | >= 3.0 < 3.5.17.0 | 3.5.17.0 |
| codesys | edge_gateway | >= 3.0 < 4.1.0.0 | 4.1.0.0 |
| codesys | embedded_target_visu_toolkit | >= 3.0 < 3.5.17.0 | 3.5.17.0 |
| codesys | gateway | >= 3.0 < 3.5.17.0 | 3.5.17.0 |
| codesys | hmi | >= 3.0 < 3.5.17.0 | 3.5.17.0 |
| codesys | opc_server | >= 3.0 < 3.5.17.0 | 3.5.17.0 |
| codesys | plchandler | >= 3.0 < 3.5.17.0 | 3.5.17.0 |
| codesys | remote_target_visu_toolkit | >= 3.0 < 3.5.17.0 | 3.5.17.0 |
| codesys | safety_sil | >= 3.0 < 3.5.17.0 | 3.5.17.0 |
| codesys | simulation_runtime | >= 3.0 < 3.5.17.0 | 3.5.17.0 |
CVSS provenance
nvdv3.17.3HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
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GHSA
GHSA-85g9-hgxq-755v: CODESYS Control Runtime system before 3
ghsa_unreviewed·2022-05-24
CVE-2021-29242 [HIGH] CWE-20 GHSA-85g9-hgxq-755v: CODESYS Control Runtime system before 3
CODESYS Control Runtime system before 3.5.17.0 has improper input validation. Attackers can send crafted communication packets to change the router's addressing scheme and may re-route, add, remove or change low level communication packages.
CISA ICS
CODESYS in Festo Automation Suite
cisa_ics·2026-03-17
CODESYS in Festo Automation Suite
ICS Advisory
##
CODESYS in Festo Automation Suite
Release DateMarch 17, 2026
Alert CodeICSA-26-076-01
Related topics:
Industrial Control System Vulnerabilities, Industrial Control Systems
View CSAF
## Summary
3. TECHNICAL DETAILS
The following versions of CODESYS in Festo Automation Suite are affected:
- FESTO Software Festo Automation Suite (versions prior to 2.8.0.138) installed with CODESYS Software CODESYS Development System (3.0) vers:all/*
- FESTO Software Festo Automation Suite (versions prior to 2.8.0.138) installed with CODESYS Software CODESYS Development System (3.5.16.10) vers:all/*
- FESTO Software Festo Automation Suite (2.8.0.137) installed with CODESYS Software CODESYS Development System (3.0) vers:all/*
- FESTO Software Festo Automation
CISA ICS
Festo Controller CECC-S,-LK,-D Family Firmware (Update A)
cisa_ics·2025-11-13
Festo Controller CECC-S,-LK,-D Family Firmware (Update A)
ICS Advisory
##
Festo Controller CECC-S,-LK,-D Family Firmware (Update A)
Last RevisedNovember 13, 2025
Alert CodeICSA-25-273-04
Related topics:
Industrial Control System Vulnerabilities, Industrial Control Systems
View CSAF
## 1. EXECUTIVE SUMMARY
- CVSS v3 9.8
- ATTENTION: Exploitable remotely/low attack complexity
- Vendor: Festo
- Equipment: Controller CECC-S,-LK,-D Family Firmware
- Vulnerabilities: Exposure of Resource to Wrong Sphere, Untrusted Pointer Dereference, NULL Pointer Dereference, Files or Directories Accessible to External Parties, Out-of-bounds Write, Improper Privilege Management, Incorrect Permission Assignment for Critical Resource, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'), Missing Release of Memory afte
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://customers.codesys.com/index.phphttps://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14640&token=623b6fceb0579ef0f7505e29beefa5b3f8ac7873&download=https://www.codesys.com/security/security-reports.htmlhttps://customers.codesys.com/index.phphttps://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14640&token=623b6fceb0579ef0f7505e29beefa5b3f8ac7873&download=https://www.codesys.com/security/security-reports.html
2021-05-03
Published