CVE-2025-40804

criticalpriority · track · 0EPSS 0.004 · 35 %ileDEEUNLRUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.41% (35th) EPSS
CVSS 9.1 · critical
Is it mine?
16 products
Check your exposure
Who says so?
6 sources
cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-27

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.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

  • FixedSIMATIC Virtualization as a Service (SIVaaS)siemens_psirt

    Contact Technical Support for assistance

  • FixedSIMATIC Virtualization as a Service (SIVaaS)cisa_csaf_ot

    Contact Technical Support for assistance

02

cvss

Technical severity, 0–10. One row per scoring source.

9.3
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8–9.3

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · NCSC-NL NL
v3.19.1criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · FSTEC (BDU) RU
v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · productcert@siemens.com DEexploitability 3.9 · impact 5.2
v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · Siemens ProductCERT DE
v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · CISA US
v4.09.3criticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:Nsecondary · ENISA EU
v4.09.3criticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · productcert@siemens.com DE
v4.08highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)
03

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-732USCWE-732USCWE-732USCWE-732USCWE-732US
05

affected products (16)

Products and version ranges known to be affected.

06

advisories (3)

Vendor and ecosystem advisories describing this.

  • NCSC-2025-0274Kwetsbaarheden verholpen in Siemens productenNL2025-09-09csaf · ncsc_nlNL

    Siemens heeft kwetsbaarheden verholpen in diverse producten als Apogee, Industial Edge, RUGGEDCOM, SIMATIC, SIMOTION en SINAMICS.

  • SSA-534283SSA-534283: Insecure File Share Vulnerability in SIMATIC Virtualization as a Service (SIVaaS)2025-09-09csaf · siemens_psirtDE

    SIMATIC Virtualization as a Service (SIVaaS) is affected by a vulnerability which exposes a network share without any authentication. This could allow an attacker to access or alter sensitive data without proper authorization. Siemens recommends to contact technical support to fix the vulnerability.

  • ICSA-25-254-02Siemens SIMATIC Virtualization as a Service (SIVaaS)2025-09-09icsa · cisa_csaf_otUS

    SIMATIC Virtualization as a Service (SIVaaS) is affected by a vulnerability which exposes a network share without any authentication. This could allow an attacker to access or alter sensitive data without proper authorization. Siemens recommends to contact technical support to fix the vulnerability.

07

also known as (4)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducisa_csaf_otncsc_nlsiemens_psirtNVDCVE.orgMITRE
published 2025-09-09modified 2026-06-17
09

references (5)

External citations — patches, advisories, analysis.

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