Дельта Электроникс ДВП12СЭ ПЛС: Уязвимости Modbus TCP без аутентификации

View CSAF Summary Successful exploitation of these vulnerabilities could allow an attacker to remotely issue commands, modify operational values, interfere with control logic, and alter device behavior without authentication or privilege enforcement. The following versions of Delta Electronics DVP12SE PLC are affected: DVP12SE PLC vers:all/* (CVE-2026-12819, CVE-2026-12818) CVSS Vendor Equipment Vulnerabilities v3 9.8 Delta Electronics Delta Electronics DVP12SE PLC Missing Authentication for Critical Function, Allocation of Resources Without Limits or Throttling Background Critical Infrastructure Sectors: Critical Manufacturing Countries/Areas Deployed: Worldwide Company Headquarters Location: Taiwan Vulnerabilities Expand All + CVE-2026-12819 The Delta Electronics DVP12SE PLC exposes a Modbus TCP service over a specified port without authentication or access control, permitting unauthenticated interaction with security-sensitive PLC functions. The device accepts Modbus commands from any reachable network source without requiring credentials, privilege validation, or operator approval, allowing unauthorized read and write access to coils, holding registers, operational memory, relay states, and process control functions. View CVE Details Affected Products Delta Electronics DVP12SE PLC Vendor: Delta Electronics Product Version: Delta Electronics DVP12SE PLC: vers:all/* Product Status: known_affected Remediations Mitigation Delta Electronics is aware of these vulnerabilities and is currently working on a fix. Mitigation Delta Electronics recommends users apply the following workarounds: Mitigation Enable the IP Filter feature: Configure and enable the PLC's built-in IP Filter function via the programming software. Restrict access exclusively to the IP addresses of trusted devices (such as designated HMI panels or SCADA hosts) to block unauthorized network access.Set up PLC password protection: Enable password protection for the PLC within the programming software to ensure the device's core control logic and parameters cannot be easily downloaded, overwritten, or tampered with.Implement network isolation and firewall protection: Deploy the PLC within an independent local area network (OT control network) secured by a firewall. Never connect the device directly to the office network or the Internet. If remote access is required, enforce the use of a secure, authorized VPN tunnel. Mitigation For more information refer to Delta Electronic's advisory page https://www.deltaww.com/en-US/service-support/product-cybersecurity/advisory. https://www.deltaww.com/en-US/service-support/product-cybersecurity/advisory Relevant CWE: CWE-306 Missing Authentication for Critical Function Metrics CVSS Version Base Score Base Severity Vector String 3.1 9.8 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H 4.0 9.3 CRITICAL CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVE-2026-12818 Delta Electronics DVP12SE PLCs are susceptible to a resource allocation vulnerability without limits or throttling (CWE-770) within their Modbus TCP service. A remote attacker could exploit this vulnerability by flooding the Modbus port (TCP/502) with a continuous stream of raw network packets or specially crafted and malformed packets. View CVE Details Affected Products Delta Electronics DVP12SE PLC Vendor: Delta Electronics Product Version: Delta Electronics DVP12SE PLC: vers:all/* Product Status: known_affected Remediations Mitigation Delta Electronics is aware of these vulnerabilities and is currently working on a fix. Mitigation Delta Electronics recommends users apply the following workarounds: Mitigation Enable the IP Filter feature: Configure and enable the PLC's built-in IP Filter function via the programming software. Restrict access exclusively to the IP addresses of trusted devices (such as designated HMI panels or SCADA hosts) to block unauthorized network access.Set up PLC password protection: Enable password protection for the PLC with