In all versions of Omron PLC CJ Series, an attacker can send a series of specific data packets within a short period, causing a service error on the PLC Ethernet module, which in turn causes a PLC service denied result.

Parsing malformed project files in Omron CX-One versions 4.42 and prior, including the following applications: CX-FLnet versions 1.00 and prior, CX-Protocol versions 1.992 and prior, CX-Programmer versions 9.65 and prior, CX-Server versions 5.0.22 and prior, Network Configurator versions 3.63 and prior, and Switch Box Utility versions 1.68 and prior, may cause a heap-based buffer overflow.

Parsing malformed project files in Omron CX-One versions 4.42 and prior, including the following applications: CX-FLnet versions 1.00 and prior, CX-Protocol versions 1.992 and prior, CX-Programmer versions 9.65 and prior, CX-Server versions 5.0.22 and prior, Network Configurator versions 3.63 and prior, and Switch Box Utility versions 1.68 and prior, may allow the pointer to call an incorrect object resulting in an access of resource using incompatible type condition.

In Omron CX-Supervisor Versions 3.30 and prior, processing a malformed packet by a certain executable may cause an untrusted pointer dereference vulnerability.

In Omron CX-Supervisor Versions 3.30 and prior, use after free vulnerabilities can be exploited when CX Supervisor parses a specially crafted project file.

In Omron CX-Supervisor Versions 3.30 and prior, parsing malformed project files may cause a heap-based buffer overflow.

In Omron CX-Supervisor Versions 3.30 and prior, parsing malformed project files may cause a double free vulnerability.

In Omron CX-Supervisor Versions 3.30 and prior, parsing malformed project files may cause an out of bounds vulnerability.

Parsing malformed project files in Omron CX-One versions 4.42 and prior, including the following applications: CX-FLnet versions 1.00 and prior, CX-Protocol versions 1.992 and prior, CX-Programmer versions 9.65 and prior, CX-Server versions 5.0.22 and prior, Network Configurator versions 3.63 and prior, and Switch Box Utility versions 1.68 and prior, may cause a stack-based buffer overflow.

In Omron CX-Supervisor Versions 3.30 and prior, parsing malformed project files may cause a stack-based buffer overflow.

In Omron CX-Supervisor Versions 3.30 and prior, access of uninitialized pointer vulnerabilities can be exploited when CX Supervisor indirectly calls an initialized pointer when parsing malformed packets.

OMRON NS devices 1.1 through 1.3 allow remote attackers to bypass authentication via a direct request to the .html file for a specific screen, as demonstrated by monitor.html.

Authentication bypass by capture-replay vulnerability exists in Machine automation controller NX7 series all models V1.28 and earlier, Machine automation controller NX1 series all models V1.48 and earlier, and Machine automation controller NJ series all models V 1.48 and earlier, which may allow an adjacent attacker who can analyze the communication between the controller and the specific software used by OMRON internally to cause a denial-of-service (DoS) condition or execute a malicious program.

Use of hard-coded credentials vulnerability exists in Machine automation controller NJ series all models V 1.48 and earlier, Machine automation controller NX7 series all models V1.28 and earlier, Machine automation controller NX1 series all models V1.48 and earlier, Automation software 'Sysmac Studio' all models V1.49 and earlier, and Programmable Terminal (PT) NA series NA5-15W/NA5-12W/NA5-9W/NA5-7W models Runtime V1.15 and earlier, which may allow a remote attacker who successfully obtained the user credentials by analyzing the affected product to access the controller.

Omron’s CS and CJ series PLCs have an unrestricted externally accessible lock vulnerability.

In Omron PLC CJ series, all versions, and Omron PLC CS series, all versions, an attacker could monitor traffic between the PLC and the controller and replay requests that could result in the opening and closing of industrial valves.

Omron CX-One CX-Programmer before 9.6, CJ2M PLC devices before 2.1, and CJ2H PLC devices before 1.5 rely on cleartext password transmission, which allows remote attackers to obtain sensitive information by sniffing the network during a PLC unlock request.

Path traversal vulnerability exists in Machine Automation Controller NJ Series and Machine Automation Controller NX Series. An arbitrary file in the affected product may be accessed or arbitrary code may be executed by processing a specially crafted request sent from a remote attacker with an administrative privilege. As for the details of the affected product names/versions, see the information provided by the vendor under [References] section.

Out-of-bounds read vulnerability exists in CX-Programmer included in CX-One CXONE-AL[][]D-V4 Ver. 9.81 or lower. Opening a specially crafted project file may lead to information disclosure and/or the product being crashed.

Free of pointer not at start of buffer vulnerability exists in CX-One CX-One CXONE-AL[][]D-V4 (The version which was installed with a DVD ver. 4.61.1 or lower, and was updated through CX-One V4 auto update in January 2024 or prior) and Sysmac Studio SYSMAC-SE2[][][] (The version which was installed with a DVD ver. 1.56 or lower, and was updated through Sysmac Studio V1 auto update in January 2024 or prior). Opening a specially crafted project file may lead to arbitrary code execution.

Cross-site scripting (XSS) vulnerability in the web application on Omron NS5, NS8, NS10, NS12, and NS15 HMI terminals 8.1xx through 8.68x allows remote authenticated users to inject arbitrary web script or HTML via crafted data.

Cross-site request forgery (CSRF) vulnerability in the web application on Omron NS5, NS8, NS10, NS12, and NS15 HMI terminals 8.1xx through 8.68x allows remote authenticated users to hijack the authentication of unspecified victims via unknown vectors.

A vulnerability (CWE-428) has been identified in the Uninterruptible Power Supply (UPS) management application provided by OMRON SOCIAL SOLUTIONS Co., Ltd., where the executable file paths of Windows services are not enclosed in quotation marks. If the installation folder path of this product contains spaces, there is a possibility that unauthorized files may be executed under the service privileges by using paths containing spaces.

Least Privilege Violation (CWE-272) Vulnerability exists in the communication function between the NJ/NX-series Machine Automation Controllers and the Sysmac Studio Software. An attacker may use this vulnerability to perform unauthorized access and to execute unauthorized code remotely to the controller products.

Project files may contain malicious contents which the software will use to create files on the filesystem. This allows directory traversal and overwriting files with the privileges of the logged-in user.

An attacker with network access to the affected PLC (CJ-series and CS-series PLCs, all versions) may use a network protocol to read and write files on the PLC internal memory and memory card.

Path Traversal Vulnerabilities (CWE-22) exist in NJ/NX-series Machine Automation Controllers. An attacker may use these vulnerabilities to perform unauthorized access and to execute unauthorized code remotely to the controller products.

Out-of-bounds write vulnerability exists in CX-Programmer v.9.77 and earlier, which may lead to information disclosure and/or arbitrary code execution by having a user to open a specially crafted CXP file.

Use-after free vulnerability exists in CX-Programmer v.9.77 and earlier, which may lead to information disclosure and/or arbitrary code execution by having a user to open a specially crafted CXP file.

Stack-based buffer overflow vulnerability exists in CX-Programmer v.9.77 and earlier, which may lead to information disclosure and/or arbitrary code execution by having a user to open a specially crafted CXP file.