Vulnerability · Published Sep 9, 2025 · Assigned by siemens
CVE-2025-40804
Critical 9.1
In plain English
A critical-severity incorrect permission assignment in SIMATIC Virtualization as a Service (SIVaaS) from Siemens. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).
Severity (CVSS 3.1)9.1Critical
Exploit odds (30 days)0.4%top 64.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A vulnerability has been identified in SIMATIC Virtualization as a Service (SIVaaS) (All versions). The affected application exposes a network share without any authentication. This could allow an attacker to access or alter sensitive data without proper authorization.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Siemens | SIMATIC Virtualization as a Service (SIVaaS) | 0 – before * |
Weakness: CWE-732 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N