CVE-2018-11453

What it is

A vulnerability has been identified in SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V10, V11, V12 (All versions), SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V13 (All versions < V13 SP2 Update 2), SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V14 (All versions < V14 SP1 Update 6), SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V15 (All versions < V15 Update 2). Improper file permissions in the default installation of TIA Portal may allow an attacker with local file system access to insert specially crafted files which may prevent TIA Portal startup (Denial-of-Service) or lead to local code execution. No special privileges are required, but the victim needs to attempt to start TIA Portal after the manipulation.

At a glance

Exploitability

Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.

Exploit odds

0.4% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2018-08-07 15:29 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 01:35 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.4% in the next 30 days (EPSS).
• Severity: 7.8 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2018-08-07 15:29 UTC

Last modified

2026-06-17 01:35 UTC

Exploit probability

0.4% · EPSS, next 30 days

Weakness

CWE-276 · Incorrect default permissions

Record status

Modified

Affected

• Siemens Simatic Step 7 \(tia portal\) 10.0
• Siemens Simatic Step 7 \(tia portal\) 11.0
• Siemens Simatic Step 7 \(tia portal\) 12.0
• Siemens Simatic Step 7 \(tia portal\) 13.0
• Siemens Simatic Step 7 \(tia portal\) 14.0
• Siemens Simatic Step 7 \(tia portal\) 15.0
• Siemens Simatic Wincc \(tia portal\) 10.0
• Siemens Simatic Wincc \(tia portal\) 11.0

Attack profile CVSS 3.0 · 7.8

Attack vector

Local

Complexity

Low

Privileges needed

Low

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Is it in your code?

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