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LowAdvisoryCISA — cybersecurity advisories· 14 May 2026

Siemens SIMATIC

Severity: Low · Kind: Advisory

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From the source

View CSAF Summary SIMATIC HMI Unified Comfort Panels before V21.0 are affected by a vulnerability that allows an unauthenticated attacker to access the web browser via the help link. This vulnerability allows an attacker to access the web browser through the Control Panel if it is not protected by the corresponding security mechanisms. This opens the possibility for the attacker to find backdoors, which might lead to unwanted misconfigurations. Siemens has released new versions for the affected products and recommends to update to the latest versions. The following versions of Siemens SIMATIC are affected: SIMATIC HMI MTP1000 Unified Comfort Panel (6AV2128-3KB06-0AX1) vers:intdot/<21 (CVE-2026-27662) SIMATIC HMI MTP1000 Unified Comfort Panel hygienic (6AV2128-3KB40-0AX0) vers:intdot/<21 (CVE-2026-27662) SIMATIC HMI MTP1000 Unified Comfort Panel hygienic neutral design (6AV2128-3KB70-0AX0) vers:intdot/<21 (CVE-2026-27662) SIMATIC HMI MTP1000, Unified Comfort Panel neutral (6AV2128-3KB36-0AX1) vers:intdot/<21 (CVE-2026-27662) SIMATIC HMI MTP1200 Comfort Pro for stand (expandable, flange at the bottom) (6AV2128-3MB27-1BX0) vers:intdot/<21 (CVE-2026-27662) SIMATIC HMI MTP1200 Comfort Pro for support arm (expandable, round tube) and extension unit (6AV2128-3MB27-0BX0) vers:intdot/<21 (CVE-2026-27662) SIMATIC HMI MTP1200 Comfort Pro for support arm (not extendable, flange on top) (6AV2128-3MB27-0AX0) vers:intdot/<21 (CVE-2026-27662) SIMATIC HMI MTP1200 Comfort Pro neutral design fo

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Plain-English summaries are AI-generated and reviewed for tone, not technical accuracy. For incident response, always rely on the original source linked above.