9.3

CVE-2026-25786: siemens simatic drive controller cpu 1504d tf Cross-site Scripting

CVSS: 9.3v4.0CriticalAwaiting analysis
Published 12-05-2026Last modified 14-07-2026
Open JSON

Vulnerability summary

CVE-2026-25786 is a critical (CVSS 9.3) Cross-site Scripting vulnerability in siemens simatic drive controller cpu 1504d tf. EPSS estimates a 0.54% chance of exploitation in the next 30 days, higher than 44.2% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.3/10
010
Critical · v4.0 (CVE.org)
EPSS score
0.54%
0%100%
Low · +0.17 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 12-05-2026
    PublishedVulnerability first disclosed.
  2. 14-07-2026
    Last modifiedVulnerability information updated.

Description

Affected devices do not properly validate and sanitize PLC/station name rendered on the "communication" parameters page of the web interface. This could allow an authenticated attacker who is authorized to download a TIA project into the product, to inject malicious scripts into the page. If a benign user with appropriate rights accesses the "communication" parameters page, the malicious code would be executed in the scope of their web session.

CVSS metrics

4 scores · 2 sources · 2 versions

EPSS trend

Probability

0.54%

Chance of exploitation in the next 30 days

Percentile

44%

Versus all other CVEs

30-day change

+0.17 pp

From 0.37% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.54%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Siemens102 products

1 vendor · 102 products

References

1 links