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VulnerabilitiesSep 22, 2026

Siemens SIPLUS and SIMATIC Products

Siemens SIPLUS and SIMATIC products vulnerable to 'Copy Fail' vulnerability.

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Summary

Multiple Siemens SIPLUS and SIMATIC products are affected by the 'Copy Fail' vulnerability (CVE-2026-31431). Siemens has released updated versions for some products and provided specific countermeasures for others where fixes are not yet available. The vulnerability impacts critical infrastructure sectors worldwide.

Full text

ICS Advisory Siemens SIPLUS and SIMATIC Products Release DateSeptember 22, 2026 Alert CodeICSA-26-265-04 Related topics: Industrial Control System Vulnerabilities , Industrial Control Systems View CSAF Summary Multiple Siemens products are vulnerable to the "Copy Fail" vulnerability. Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends specific countermeasures for products where fixes are not, or not yet available. The following versions of Siemens SIPLUS and SIMATIC Products are affected: SIMATIC AX Runtime Core Linux Common Debian vers:all/* (CVE-2026-31431) SIMATIC AX Runtime Core Linux Common Debian arm64 vers:all/* (CVE-2026-31431) SIMATIC AX Runtime Core Linux Platform Container Common Debian Development vers:all/* (CVE-2026-31431) SIMATIC AX Runtime Core Linux VMWare Development vers:all/* (CVE-2026-31431) SIMATIC CN 4100 vers:intdot/<6.0 (CVE-2026-31431) SIMATIC HMI MTP1000 Unified Basic (6AV2123-3KB32-0AW0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1000 Unified Comfort Panel (6AV2128-3KB06-0AX1) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1000 Unified Comfort Panel hygienic (6AV2128-3KB40-0AX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1000 Unified Comfort Panel hygienic neutral design (6AV2128-3KB70-0AX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1000, Unified Comfort Panel neutral (6AV2128-3KB36-0AX1) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1200 Comfort Pro for stand (expandable, flange at the bottom) (6AV2128-3MB27-1BX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1200 Comfort Pro for support arm (expandable, round tube) and extension unit (6AV2128-3MB27-0BX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1200 Comfort Pro for support arm (not extendable, flange on top) (6AV2128-3MB27-0AX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1200 Comfort Pro neutral design for stand (expandable, flange at the bottom) (6AV2128-3MB57-1BX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1200 Comfort Pro neutral design for support arm (expandable, round tube) and extension (6AV2128-3MB57-0BX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1200 Comfort Pro neutral design for support arm (not extendable, flange on top) (6AV2128-3MB57-0AX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1200 Unified Basic (6AV2123-3MB32-0AW0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1200 Unified Comfort Panel (6AV2128-3MB06-0AX1) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1200 Unified Comfort Panel hygienic (6AV2128-3MB40-0AX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1200 Unified Comfort Panel hygienic neutral design (6AV2128-3MB70-0AX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1200 Unified Comfort Panel neutral design (6AV2128-3MB36-0AX1) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1500 Comfort Pro for stand (expandable, flange at the bottom) (6AV2128-3QB27-1BX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1500 Comfort Pro for support arm (expandable, round tube) and extension unit (6AV2128-3QB27-0BX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1500 Comfort Pro for support arm (not extendable, flange on top) (6AV2128-3QB27-0AX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1500 Comfort Pro neutral design for stand (expandable, flange at the bottom) (6AV2128-3QB57-1BX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1500 Comfort Pro neutral design for support arm (expandable, round tube) and extension (6AV2128-3QB57-0BX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1500 Comfort Pro neutral design for support arm (not extendable, flange on top) (6AV2128-3QB57-0AX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1500 Unified Comfort Panel (6AV2128-3QB06-0AX1) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1500 Unified Comfort Panel hygienic (6AV2128-3QB40-0AX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1500 Unified Comfort Panel hygienic neutral design (6AV2128-3QB70-0AX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1500 Unified Comfort Panel neutral design (6AV2128-3QB36-0AX1) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1900 Comfort Pro for stand (expandable, flange at the bottom) (6AV2128-3UB27-1BX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1900 Comfort Pro for support arm (expandable, round tube) and extension unit (6AV2128-3UB27-0BX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1900 Comfort Pro for support arm (not extendable, flange on top) (6AV2128-3UB27-0AX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1900 Comfort Pro neutral design for stand (expandable, flange at the bottom) (6AV2128-3UB57-1BX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1900 Comfort Pro neutral design for support arm (expandable, round tube) and extension (6AV2128-3UB57-0BX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1900 Comfort Pro neutral design for support arm (not extendable, flange on top) (6AV2128-3UB57-0AX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1900 Unified Comfort Panel (6AV2128-3UB06-0AX1) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1900 Unified Comfort Panel hygienic (6AV2128-3UB40-0AX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1900 Unified Comfort Panel hygienic neutral design (6AV2128-3UB70-0AX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP1900 Unified Comfort Panel neutral design (6AV2128-3UB36-0AX1) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP2200 Comfort Pro for stand (expandable, flange at the bottom) (6AV2128-3XB27-1BX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP2200 Comfort Pro for support arm (expandable, round tube) and extension unit (6AV2128-3XB27-0BX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP2200 Comfort Pro for support arm (not extendable, flange on top) (6AV2128-3XB27-0AX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP2200 Comfort Pro neutral design for stand (expandable, flange at the bottom) (6AV2128-3XB57-1BX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP2200 Comfort Pro neutral design for support arm (expandable, round tube) and extension (6AV2128-3XB57-0BX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP2200 Comfort Pro neutral design for support arm (not extendable, flange on top) (6AV2128-3XB57-0AX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP2200 Unified Comfort Hygienic (6AV2128-3XB40-0AX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP2200 Unified Comfort Hygienic neutral design (6AV2128-3XB70-0AX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP2200 Unified Comfort Panel (6AV2128-3XB06-0AX1) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP2200 Unified Comfort Panel neutral design (6AV2128-3XB36-0AX1) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP400 Unified Basic (6AV2123-3DB32-0AW0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP700 Unified Basic (6AV2123-3GB32-0AW0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP700 Unified Comfort Panel (6AV2128-3GB06-0AX1) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP700 Unified Comfort Panel hygienic neutral design (6AV2128-3GB40-0AX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP700 Unified Comfort Panel hygienic neutral design (6AV2128-3GB70-0AX0) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC HMI MTP700, Unified Comfort Panel neutral design (6AV2128-3GB36-0AX1) vers:intdot/<21.0.2.1 (CVE-2026-31431) SIMATIC IoT2050 Advanced (6ES7647-0BA00-1YA2) vers:all/* (CVE-2026-31431) SIMATIC IPC Industrial Edge Device OS (IED-OS) vers:all/* (CVE-2026-31431) SIMATIC S7-1500 TM MFP (6ES7558-1AA00-0AB0) vers:all/* (CVE-2026-31431) SIPLUS HMI MTP1000 Unified Basic (6AG1123-3KB32-2AW0) vers:intdot/<21.0.2.1 (CVE-2026-31431

Indicators of Compromise

  • cve — CVE-2026-31431

Entities

Siemens (vendor)SIPLUS (product)SIMATIC (product)