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Vulnerability · Published May 12, 2026 · Assigned by siemens

CVE-2026-27662

High 7.7

In plain English

A high-severity security flaw in SIMATIC HMI MTP1000 Unified Comfort Panel from Siemens. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities).

Severity (CVSS 3.1)7.7High
Exploit odds (30 days)0.1%top 98.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Affected devices do not properly restrict access to the web browser via the Control Panel when no corresponding security mechanisms are in place. This could allow an unauthenticated attacker to gain unauthorized access to the web browser, potentially enabling the discovery of backdoors, performing unauthorized actions, or exploiting misconfigurations that may lead to further system compromise.

Affected products (as reported)

VendorProductVersions
Siemens SIMATIC HMI MTP1000 Unified Comfort Panel 0 – before V21
Siemens SIMATIC HMI MTP1000 Unified Comfort Panel hygienic 0 – before V21
Siemens SIMATIC HMI MTP1000 Unified Comfort Panel hygienic neutral design 0 – before V21
Siemens SIMATIC HMI MTP1000, Unified Comfort Panel neutral 0 – before V21
Siemens SIMATIC HMI MTP1200 Comfort Pro for stand (expandable, flange at the bottom) 0 – before V21
Siemens SIMATIC HMI MTP1200 Comfort Pro for support arm (expandable, round tube) and extension unit 0 – before V21
Siemens SIMATIC HMI MTP1200 Comfort Pro for support arm (not extendable, flange on top) 0 – before V21
Siemens SIMATIC HMI MTP1200 Comfort Pro neutral design for stand (expandable, flange at the bottom) 0 – before V21
Siemens SIMATIC HMI MTP1200 Comfort Pro neutral design for support arm (expandable, round tube) and extensio 0 – before V21
Siemens SIMATIC HMI MTP1200 Comfort Pro neutral design for support arm (not extendable, flange on top) 0 – before V21
Siemens SIMATIC HMI MTP1200 Unified Comfort Panel 0 – before V21
Siemens SIMATIC HMI MTP1200 Unified Comfort Panel hygienic 0 – before V21
Siemens SIMATIC HMI MTP1200 Unified Comfort Panel hygienic neutral design 0 – before V21
Siemens SIMATIC HMI MTP1200 Unified Comfort Panel neutral design 0 – before V21
Siemens SIMATIC HMI MTP1500 Comfort Pro for stand (expandable, flange at the bottom) 0 – before V21
Siemens SIMATIC HMI MTP1500 Comfort Pro for support arm (expandable, round tube) and extension unit 0 – before V21
Siemens SIMATIC HMI MTP1500 Comfort Pro for support arm (not extendable, flange on top) 0 – before V21
Siemens SIMATIC HMI MTP1500 Comfort Pro neutral design for stand (expandable, flange at the bottom) 0 – before V21
Siemens SIMATIC HMI MTP1500 Comfort Pro neutral design for support arm (expandable, round tube) and extensio 0 – before V21
Siemens SIMATIC HMI MTP1500 Comfort Pro neutral design for support arm (not extendable, flange on top) 0 – before V21
Siemens SIMATIC HMI MTP1500 Unified Comfort Panel 0 – before V21
Siemens SIMATIC HMI MTP1500 Unified Comfort Panel hygienic 0 – before V21
Siemens SIMATIC HMI MTP1500 Unified Comfort Panel hygienic neutral design 0 – before V21
Siemens SIMATIC HMI MTP1500 Unified Comfort Panel neutral design 0 – before V21
Siemens SIMATIC HMI MTP1900 Comfort Pro for stand (expandable, flange at the bottom) 0 – before V21
Siemens SIMATIC HMI MTP1900 Comfort Pro for support arm (expandable, round tube) and extension unit 0 – before V21
Siemens SIMATIC HMI MTP1900 Comfort Pro for support arm (not extendable, flange on top) 0 – before V21
Siemens SIMATIC HMI MTP1900 Comfort Pro neutral design for stand (expandable, flange at the bottom) 0 – before V21
Siemens SIMATIC HMI MTP1900 Comfort Pro neutral design for support arm (expandable, round tube) and extensio 0 – before V21
Siemens SIMATIC HMI MTP1900 Comfort Pro neutral design for support arm (not extendable, flange on top) 0 – before V21

Weakness: CWE-1188 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

References