CVE-2026-59241: High severity Siemens SIMATIC WinCC V7.5 vulnerability
A vulnerability has been identified in SIMATIC WinCC V7.5 (All versions), SIMATIC WinCC V8.0 (All versions < V8.0 Update 11), SIMATIC WinCC V8.1 (All versions < V8.1 Update 7). The affected application does not sufficiently restrict the permissions assigned to a database role. This could allow an authenticated remote attacker with database access to escalate privileges and execute arbitrary commands on the host system where SIMATIC WinCC is installed, potentially leading to a compromise of the system.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
SIMATIC WinCC V8.0to a version that resolves this vulnerability.Fixed in V8.0 Update 11 - Upgrade
Upgrade
SIMATIC WinCC V8.1to a version that resolves this vulnerability.Fixed in V8.1 Update 7
Event History
Frequently Asked Questions
Which deployments are affected?
All SIMATIC WinCC V7.5 versions are affected. For SIMATIC WinCC V8.0, versions earlier than Update 11 are affected; for V8.1, versions earlier than Update 7 are affected.
What access does an attacker need to exploit this issue?
An attacker must be authenticated and have remote database access. No user interaction is required, and the attack complexity is rated low.
What could an attacker achieve?
An attacker could exploit excessive database-role permissions to escalate privileges and execute arbitrary commands on the host running SIMATIC WinCC. This could compromise the confidentiality, integrity, and availability of that system.
What versions address the issue?
The provided information indicates that SIMATIC WinCC V8.0 Update 11 and later, and V8.1 Update 7 and later, are not in the listed affected version ranges. No fixed version is provided for WinCC V7.5.