CVE-2025-40804CWE-732

A vulnerability has been identified in SIMATIC Virtualization as a Service (SIVaaS) (All versions)

Critical · published September 9, 2025

CVSS v4.0
9.3
EPSS
0%
Percentile
34.5
In the wild
Unconfirmed
What it is

🚨 A shocking lack of authentication exposes sensitive data in SIMATIC Virtualization as a Service (SIVaaS) — it’s like leaving your front door wide open with a neon sign that says, "Come on in!" 🔥 Think of it like a library with a stack of confidential files just sitting on a table, entirely unguarded. Anyone can grab those files and alter them, without needing a library card or even signing in! An attacker could stroll right in and access or modify crucial data without breaking a sweat, leading to unauthorized changes and potential data leaks that could devastate your organization's operations. This is a critical vulnerability that needs immediate attention to prevent chaos and protect your assets!

Put simply

Think of it like a library with a stack of confidential files just sitting on a table, entirely unguarded. Anyone can grab those files and alter them, without needing a library card or even signing in! This vulnerability in SIVaaS allows attackers to access a network share without any authentication, giving them unrestricted access to sensitive files and information stored on that share.

What to do

An attacker could stroll right in and access or modify crucial data without breaking a sweat, leading to unauthorized changes and potential data leaks that could devastate your organization's operations. This is a critical vulnerability that needs immediate attention to prevent chaos and protect your assets! Patch your installation immediately, as all versions are affected. Implement access controls to secure your network shares and audit your systems to ensure no unauthorized access is possible. Don't delay—this needs to be on your priority list today! You've got this! Follow these steps to fortify your defenses and protect your network. 🛡️

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00413 · 34.5th percentile
Weakness
CWE-732 · Incorrect Permission Assignment for Critical Resource
Published
2025-09-09T08:48Z
EPSS history
Timeline
  • 09 SEP 08:48Z
    A vulnerability has been identified in SIMATIC Virtualization as a Service (SIVaaS) (All versions)
    cvelistv5