CVE-2026-71268

OpenPLC Runtime v3's compileprogram function webserver/openplc.py parses directives from uploaded Structured Text .st program files and writes the referenced content to with no validation that filepath stays within the ./core directory. A path-validation function, validatefilepath, exists elsewhe...

CVE-2026-71268

OpenPLC Runtime v3 is affected by a path traversal in compile_program() (webserver/openplc.py): it processes directives of the form (FILE:path content ) and writes to os.path.join('./core', file_path) without validating that file_path stays under ./core. A crafted ST file like (FILE:../../../etc/...

EUVD-2026-53353

OpenPLC Runtime v3's compileprogram function webserver/openplc.py parses FILE:path content directives from uploaded Structured Text .st program files and writes the referenced content to os.path.join'./core', filepath with no validation that filepath stays within the ./core directory. A crafted ....

CVE-2026-71268

OpenPLC Runtime v3's compileprogram function webserver/openplc.py parses directives from uploaded Structured Text .st program files and writes the referenced content to with no validation that filepath stays within the ./core directory. A path-validation function, validatefilepath, exists elsewhe...

CVE-2026-71268 OpenPLC Runtime v3 Path Traversal in Structured Text FILE Directive Leading to Arbitrary File Write

OpenPLC Runtime v3's compileprogram function webserver/openplc.py parses directives from uploaded Structured Text .st program files and writes the referenced content to with no validation that filepath stays within the ./core directory. A path-validation function, validatefilepath, exists elsewhe...

CVE-2026-71268 OpenPLC Runtime v3 Path Traversal in Structured Text FILE Directive Leading to Arbitrary File Write

OpenPLC Runtime v3's compileprogram function webserver/openplc.py parses directives from uploaded Structured Text .st program files and writes the referenced content to with no validation that filepath stays within the ./core directory. A path-validation function, validatefilepath, exists elsewhe...

CVE-2026-11826

OpenPLCv3 contains a heap-based buffer overflow in the getData function in webserver/core/modbusmaster.cpp. getData reads characters between two delimiters into a caller-supplied buffer with no size parameter and no bounds check. In parseConfig the function is invoked with the 100-byte...

CVE-2026-11826 OpenPLC_v3 Heap-Based Buffer Overflow in Modbus Master getData()

OpenPLCv3 contains a heap-based buffer overflow in the getData function in webserver/core/modbusmaster.cpp. getData reads characters between two delimiters into a caller-supplied buffer with no size parameter and no bounds check. In parseConfig the function is invoked with the 100-byte...

CVE-2026-11826 OpenPLC_v3 Heap-Based Buffer Overflow in Modbus Master getData()

OpenPLCv3 contains a heap-based buffer overflow in the getData function in webserver/core/modbusmaster.cpp. getData reads characters between two delimiters into a caller-supplied buffer with no size parameter and no bounds check. In parseConfig the function is invoked with the 100-byte...

CVE-2026-11826

OpenPLC_v3 has a heap-based buffer overflow in getData() within webserver/core/modbus_master.cpp. getData() copies data between delimiters into a caller-supplied buffer without size/bounds checks. parseConfig() uses a 100-byte heap-allocated MB_device.dev_name; an authenticated user can POST an o...

EUVD-2026-45380

OpenPLCv3 contains a heap-based buffer overflow in the getData function in webserver/core/modbusmaster.cpp. getData reads characters between two delimiters into a caller-supplied buffer with no size parameter and no bounds check. In parseConfig the function is invoked with the 100-byte...

CVE-2026-11826

OpenPLCv3 contains a heap-based buffer overflow in the getData function in webserver/core/modbusmaster.cpp. getData reads characters between two delimiters into a caller-supplied buffer with no size parameter and no bounds check. In parseConfig the function is invoked with the 100-byte...

PT-2026-60966

OpenPLC v3 contains a heap-based buffer overflow in the getData function in webserver/core/modbus master.cpp. getData reads characters between two delimiters into a caller-supplied buffer with no size parameter and no bounds check. In parseConfig the function is invoked with the 100-byte...

EUVD-2026-43116

OpenPLC Runtime v3 contains an authenticated arbitrary file write vulnerability in the legacy web UI program‑upload workflow. The application stores an attacker‑supplied filename progfile directly into the Programs.File database field and later uses this value as the destination path for an...

CVE-2026-14480

OpenPLC Runtime v3 contains an authenticated arbitrary file write vulnerability in the legacy web UI program‑upload workflow. The application stores an attacker‑supplied filename progfile directly into the Programs.File database field and later uses this value as the destination path for an...

CVE-2026-14480 OpenPLC v3 External Control of File Name or Path

OpenPLC Runtime v3 contains an authenticated arbitrary file write vulnerability in the legacy web UI program‑upload workflow. The application stores an attacker‑supplied filename progfile directly into the Programs.File database field and later uses this value as the destination path for an...

CVE-2026-14480

CVE-2026-14480 affects OpenPLC Runtime v3. An authenticated user can write arbitrary files via the legacy web UI program-upload workflow by storing a attacker-controlled filename (prog_file) that is later used as the destination path. Python os.path.join() honors absolute paths, enabling writes a...

OpenPLC v3

ADVISORY SUMMARY Successful exploitation of this vulnerability could allow an authenticated attacker to write arbitrary files to the filesystem and escalate this into arbitrary native code execution through the normal OpenPLC program compilation process, potentially resulting in code execution...

PT-2026-56921

Name of the Vulnerable Software and Affected Versions OpenPLC Runtime version 3 Description An authenticated arbitrary file write exists in the legacy web UI program-upload workflow. The application stores an attacker-supplied filename prog file into the Programs.File database field and uses this...

One Step Further: Understanding PLC Binaries through Cross-Platform Reverse Engineering and Function-Level Semantic Analysis

As emerging attacks increasingly target Industrial Control Systems ICS, the security of Programmable Logic Controllers PLCs has become a critical concern. Binary Code Analysis BCA, which enables analysts to understand compiled programs without source code, is essential for ICS security tasks such...