CVE-2026-59241: High severity Siemens SIMATIC WinCC V7.5 vulnerability

Q: 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.

Q: 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.

Q: 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.

Q: 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.

Published Oct 13, 2026

Updated

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

3 affected components

Siemens SIMATIC WinCC V7.5=V7.5

Siemens SIMATIC WinCC V8.0<V8.0 Update 11

Siemens SIMATIC WinCC V8.1<V8.1 Update 7

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade SIMATIC WinCC V8.0 to a version that resolves this vulnerability.
Fixed in V8.0 Update 11
Upgrade
Upgrade SIMATIC WinCC V8.1 to a version that resolves this vulnerability.
Fixed in V8.1 Update 7

Event History

Oct 13, 2026

CVE Published

via MITRE·09:18 AM

Data Sourced

via MITRE·09:18 AM

DescriptionSeverityWeakness

Data Sourced

via NVD·10:17 AM

DescriptionSeverityWeakness

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.

CVE-2026-59241: High severity Siemens SIMATIC WinCC V7.5 vulnerability

Affected Software

Remediation

Event History

Frequently Asked Questions

Which deployments are affected?

What access does an attacker need to exploit this issue?

What could an attacker achieve?

What versions address the issue?

Company

Resources

Contact

Frequently Asked Questions

Which deployments are affected?

What access does an attacker need to exploit this issue?

What could an attacker achieve?

What versions address the issue?