VulnerabilityModified

CVE-2018-11453

HIGH 7.8EPSS 0.36%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.36%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

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.

CVSS 3.0: 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.36% probability · 29th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-276, CWE-732
Affected: siemens/simatic step 7 \(tia portal\) · siemens/simatic wincc \(tia portal\)
Source: productcert@siemens.com

EPSS trend

EPSS 0.4% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

http://www.securityfocus.com/bid/105115Third Party Advisory, VDB Entry
https://cert-portal.siemens.com/productcert/pdf/ssa-979106.pdfVendor Advisory
http://www.securityfocus.com/bid/105115Third Party Advisory, VDB Entry
https://cert-portal.siemens.com/productcert/pdf/ssa-979106.pdfVendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.