16 Zero-Day Vulnerabilities Discovered in CODESYS Affect Millions of Industrial Devices

CODESYS, a widely-used integrated environment for controller programming, holds a strong presence in Operational Technology across diverse industries, such as:-

  • Factory automation
  • Energy
  • Mobile
  • Building
  • Embedded
  • Process

Backed by more than 500 manufacturers (including Schnieder Electric, Beckhoff, Wago, Eaton, ABB, Festo, etc.) and spanning various architectures that we have mentioned below, CODESYS powers millions of global devices:-

  • MIPS
  • Renesas
  • ARM
  • PowerPC
  • TriCore

Cybersecurity Researcher at Microsoft, Vladimir Eliezer Tokarev, recently identified several high-severity vulnerabilities and 16 zero-day vulnerabilities in CODESYS (CODESYS V3 SDK).

Besides this, Vladimir Eliezer Tokarev dubbed the 16 zero-day vulnerabilities that he found in CODESYS as “CoDe16,” a code name for this complete set of CODESYS zero-day vulnerabilities.

While the OT infrastructure could be affected severely by successfully exploiting all these high-severity vulnerabilities discovered in CODESYS V3 SDK.

Moreover, the Microsoft Threat Intelligence team also prompted and recommended that users at the BHUSA event (Black Hat USA 2023) attend their official session related to this vulnerability profile on August 10.

BHUSA Event Session

Cybersecurity researchers will detail the following key things during this event session:-

  • Exciting findings
  • Share technical insights into vulnerability discovery
  • Firmware extraction
  • Analysis

Apart from this, all the challenges, like proprietary network protocols and debugger-free analysis, will also be explored.

Security analysts will also unveil the root-cause for key flaws, and demonstrate the remote code execution chain to implant malicious payload, gaining full PLC control and factory floor manipulation.

Closing remarks will include the mitigation strategies, an open-source validation tool for CODESYS devices, and a live demo of successful RCE on an exposed system.

Gurubaran

Gurubaran is a co-founder of Cyber Security News and GBHackers On Security. He has 10+ years of experience as a Security Consultant, Editor, and Analyst in cybersecurity, technology, and communications.

Recent Posts

Operation HollowQuill – Weaponized PDFs Deliver a Cobalt Strike Malware Into Gov & Military Networks

In a recent revelation by SEQRITE Labs, a highly sophisticated cyber-espionage campaign, dubbed Operation HollowQuill,…

3 hours ago

Earth Alux Hackers Use VARGIET Malware to Target Organizations

A new wave of cyberattacks orchestrated by the advanced persistent threat (APT) group Earth Alux…

3 hours ago

“Lazarus Hackers Group” No Longer Refer to a Single APT Group But a Collection of Many Sub-Groups

The term "Lazarus Group," once used to describe a singular Advanced Persistent Threat (APT) actor,…

3 hours ago

DarkCloud: An Advanced Stealer Malware Sold on Telegram to Target Windows Data

DarkCloud, a highly advanced stealer malware, has emerged as a significant threat to Windows systems…

3 hours ago

Triton RAT Uses Telegram for Remote System Access and Control

Cado Security Labs has uncovered a new Python-based Remote Access Tool (RAT) named Triton RAT,…

3 hours ago

Russian Hackers Leverage Bulletproof Hosting to Shift Network Infrastructure

Russian-aligned cyber threat groups, UAC-0050 and UAC-0006, have significantly escalated their operations in 2025, targeting…

3 hours ago