CVE-2026-25789

HIGH

7.1

CVSS Score

Published: May 12, 2026 at 08:21 AM UTC

Updated: July 14, 2026 at 10:27 AM UTC

92 products affected across 1 vendorSIMATIC S7-1500 CPU 1518-4 Pn /dp MFP FirmwareSIMATIC S7-1500 CPU 1518F 4 Pn /dp MFP FirmwareSiplus S7-1500 CPU 1518-4 Pn /dp MFP Firmware

Using SIMATIC Drive Controller CPU 1504D TF by Siemens?

Get instant alerts when new vulnerabilities affect SIMATIC Drive Controller CPU 1504D TF - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

HIGH7.1

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

Description

Affected devices do not properly validate and sanitize filenames on the Firmware Update page. This could allow a remote attacker to social engineer the user into selecting the modified firmware file to be uploaded. This would result in malitcious JavaScript execution in the context of the authenticated user's session without requiring the file to be uploaded, potentially leading to session hijacking or credential theft.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

SIMATIC Drive Controller CPU 1504D Tf Firmware · Siemens

60%

v < V3.1.6

Affected range stops below V3.1.6, so it looks safe — our inference, not a vendor statement

SIMATIC Drive Controller CPU 1507D Tf Firmware · Siemens

60%

v < V3.1.6

Affected range stops below V3.1.6, so it looks safe — our inference, not a vendor statement

SIMATIC ET 200SP CPU 1514SP-2 PN · Siemens

60%

v < V4.1.6

Affected range stops below V4.1.6, so it looks safe — our inference, not a vendor statement

SIMATIC ET 200SP CPU 1514SP F-2 PN · Siemens

60%

v < V4.1.6

Affected range stops below V4.1.6, so it looks safe — our inference, not a vendor statement

SIMATIC ET 200SP CPU 1514SPT-2 PN · Siemens

60%

v < V4.1.6

Affected range stops below V4.1.6, so it looks safe — our inference, not a vendor statement

SIMATIC ET 200SP CPU 1514SPT F-2 PN · Siemens

60%

v < V4.1.6

Affected range stops below V4.1.6, so it looks safe — our inference, not a vendor statement

SIMATIC ET 200SP Open Controller CPU 1515SP PC · Siemens

60%

All versions

SIMATIC ET 200SP Open Controller CPU 1515SP PC2 · Siemens

60%

All versions

SIMATIC ET 200SP Open Controller CPU 1515SP PC3 · Siemens

60%

All versions

SIMATIC S7-1500-cpu 1510SP 1 · Siemens

60%

v < V2.9.9v < V4.1.6

Affected range stops below V2.9.9, so it looks safe — our inference, not a vendor statement

Affected range stops below V4.1.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord

https://cert-portal.siemens.com/productcert/html/ssa-688146.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.1HIGHsiemens

Vector?

Quick Info

StatusAWAITING ANALYSIS

CWE

CWE-79

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create account Sign in

Free plan, no card