CVE-2026-27662 HIGH

CVE-2026-27662

Vendor Siemens
Product SIMATIC HMI MTP1000 Unified Comfort Panel
Weakness CWE-1188
Published May 12, 2026
Last update May 13, 2026

CVSS base score

7.7/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 12, 2026 CVE published
May 13, 2026 Record updated