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 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...

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...

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...

EUVD-2026-29960

A path injection vulnerability exists in OpenPLC v3 2c82b0e79c53f8c1f1458eee15fec173400d6e1a as the binary program compiled from gluegenerator.cpp does not perform any validation on the file path parameters passed via the command line. The user-controlled input parameters are directly passed to t...

CVE-2026-31156

CVE-2026-31156 describes a path-injection flaw in OpenPLC v3 arising from glue_generator.cpp not validating file path arguments passed on the command line. User-supplied paths are handed directly to file APIs (fopen/ifstream/ofstream), enabling an attacker to read arbitrary readable files. Public...

CVE-2026-35556

OpenPLCV3 is vulnerable to a Plaintext Storage of a Password vulnerability that could allow an attacker to retrieve credentials and access sensitive information...

CVE-2026-35063

OpenPLCV3 REST API endpoint checks for JWT presence but never verifies the caller's role. Any authenticated user with role=user can delete any other user, including administrators, by specifying their user ID or they can create new accounts with role=admin, escalating to full administrator access...

CVE-2026-35556 Plaintext storage of a password in OpenPLC_V3

OpenPLCV3 is vulnerable to a Plaintext Storage of a Password vulnerability that could allow an attacker to retrieve credentials and access sensitive information...

CVE-2026-35556

OpenPLCV3 is vulnerable to a Plaintext Storage of a Password vulnerability that could allow an attacker to retrieve credentials and access sensitive information...

CVE-2026-28205

OpenPLCV3 is vulnerable to an Initialization of a Resource with an Insecure Default vulnerability which could allow an attacker to gain access to the system by bypassing authentication via an API...

PT-2026-31682

Name of the Vulnerable Software and Affected Versions OpenPLC V3 affected versions not specified Description OpenPLC V3 is susceptible to an Initialization of a Resource with an Insecure Default issue. This could allow an attacker to bypass authentication and gain access to the system through an...

PT-2026-31694

Name of the Vulnerable Software and Affected Versions OpenPLC V3 affected versions not specified Description OpenPLC V3 is susceptible to a flaw involving the storage of passwords in plaintext. This could allow an attacker to obtain credentials and access sensitive information. Recommendations At...

CVE-2021-47770

OpenPLC v3 contains an authenticated remote code execution vulnerability that allows attackers with valid credentials to inject malicious code through the hardware configuration interface. Attackers can upload a custom hardware layer with embedded reverse shell code that establishes a network...

EUVD-2026-3655

OpenPLC v3 contains an authenticated remote code execution vulnerability that allows attackers with valid credentials to inject malicious code through the hardware configuration interface. Attackers can upload a custom hardware layer with embedded reverse shell code that establishes a network...

OpenPLC code injection vulnerability

OpenPLC is an open-source programmable logic controller developed by Thiago Alves. It provides low-cost industrial solutions for automation and research purposes. Version OpenPLC v3 has a code injection vulnerability, which stems from authenticated remote code execution through the hardware...

PT-2026-3795

Name of the Vulnerable Software and Affected Versions OpenPLC version 3 Description The software contains an authenticated remote code execution issue. An attacker with valid credentials can inject malicious code through the hardware configuration interface. This allows for the upload of a custom...

CVE-2025-13970

OpenPLCV3 is vulnerable to a cross-site request forgery CSRF attack due to the absence of proper CSRF validation. This issue allows an unauthenticated attacker to trick a logged-in administrator into visiting a maliciously crafted link, potentially enabling unauthorized modification of PLC settin...

CVE-2025-13970

OpenPLCV3 is vulnerable to a cross-site request forgery CSRF attack due to the absence of proper CSRF validation. This issue allows an unauthenticated attacker to trick a logged-in administrator into visiting a maliciously crafted link, potentially enabling unauthorized modification of PLC settin...