Intelligence online17 sources monitored11 actively exploited 7d42 published 24hChecked recently
Vulnerability record

CVE-2026-63356

ElevatedNo known exploitation

Patch status

No official fix confirmed yet

Until a fix ships, follow the vendor's mitigations, limit exposure of affected systems, and watch this record for a patch.

Description

Affected devices do not properly sanitize calculated signal names contained in imported CSV trace files before including them in error messages 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 trace file. Attacker-controlled JavaScript could be executed in the user’s browser session when the resulting error message is displayed.

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Intelligence timeline

Developments from the last 30 days, newest first.

  1. CVSS scoredUpdate

    CVE-2026-63356 scored CVSS 5.3

    Basis: NIST National Vulnerability Database

Coverage

CriticalPatch

Siemens SIMATIC S7 PLCs Web Server

Patch

Apply the vendor's security update for the affected products.

CISA Cybersecurity AdvisoriesCritical infra

References