---
cve: "CVE-2026-25786"
severity: "CRITICAL"
cvss: 9.3
epss: "37%"
vendor: "Siemens"
kev: false
exploited: false
published: "2026-05-12 10:16:44"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T22:46:18+02:00"
---

# CVE-2026-25786

> 9.3 CRITICAL

## Beschreibung

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-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Hoch | good |

## Referenzen

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

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-25786) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_