CVE-2026-63357
MediumCVSS 6.1Summary
A vulnerability affects devices that do not properly sanitize calculated signal data contained in imported calculated signal files before rendering it on the Trace page. An attacker could social engineer an authorized user with 'Read diagnostics' right into importing a specially crafted file, allowing attacker-controlled JavaScript to execute in the user's browser session and perform PLC operations within the user's authorization scope.
Risk Assessment
The risk includes execution of malicious script in the user's browser, which could lead to unauthorized PLC operations and security compromise.
Recommendation
It is recommended to update the software to a patched version and educate users on safe file importing practices.
Other vulnerabilities in Siemens SIMATIC (assumed based on context)
See all- CVE-2026-63356Medium
A vulnerability affects devices that do not properly sanitize calculated signal names contained in imported CSV trace files before including them in error messages on the Trace page. An attacker could social engineer an authorized user with 'Read diagnostics' right into importing a specially crafted trace file, allowing attacker-controlled JavaScript to execute in the user's browser session when the error message is displayed.
- CVE-2026-63355Medium
A vulnerability affects devices that do not properly sanitize signal names contained in imported CSV trace files before rendering them in selection menus on the Trace page. An attacker could social engineer an authorized user with 'Read diagnostics' right into importing a specially crafted trace file, allowing attacker-controlled JavaScript to execute in the user's browser session when the user interacts with an affected selection menu.
- CVE-2026-63352Medium
A vulnerability affects devices that do not properly sanitize calculated signal data contained in imported CSV trace files before rendering it on the Trace page. An attacker could social engineer an authorized user with 'Read diagnostics' right into importing a specially crafted trace file, allowing attacker-controlled JavaScript to execute in the user's browser session and perform PLC operations within the user's authorization scope.
- CVE-2026-63351Medium
A vulnerability affects devices that do not properly validate and sanitize visual properties of calculated signals contained in imported CSV trace files before rendering them on the Trace page. An attacker could social engineer an authorized user with 'Read diagnostics' right into importing a specially crafted trace file, allowing attacker-controlled JavaScript to execute in the user's browser session and perform PLC operations within the user's authorization scope.
Original NVD description (English source)
Affected devices do not properly sanitize calculated signal data contained in imported calculated signal files before rendering it on the Trace page. This could allow an attacker to social engineer an authorized user who holds the function right “Read diagnostics” into importing a specially crafted file. Successful exploitation could allow attacker-controlled JavaScript to execute in the user’s browser session and perform PLC operations through the web server within the scope of the user’s authorization.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS