CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:HAffected devices do not properly validate and sanitize PLC/station name rendered on the "communication" parameters page of the web interface. This could allow an authenticated attacker who is authorized to download a TIA project into the product, to inject malicious scripts into the page. If a benign user with appropriate rights accesses the "communication" parameters page, the malicious code would be executed in the scope of their web session.
This CISA advisory details multiple vulnerabilities discovered within Siemens SIMATIC S7 PLCs, specifically within their web servers. These vulnerabilities, identified as CVE-2026-25786 through CVE-2026-25789, allow for…