CVE-2025-40805

criticalpriority · track · 0EPSS 0.007 · 51 %ileDEEUNLUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.65% (51st) EPSS
CVSS 10 · critical
Is it mine?
513 products
Check your exposure
Who says so?
6 sources
cnnvd · enisa_euvd · cert_bund · cisa_csaf_ot

EPSS · scored 2026-10-27

Affected devices do not properly enforce user authentication on specific API endpoints. This could facilitate an unauthenticated remote attacker to circumvent authentication and impersonate a legitimate user. Successful exploitation requires that the attacker has learned the identity of a legitimate user.

01

remediations

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

A vendor fix is available.

02

cvss

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

10.0
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.110criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · productcert@siemens.com DEexploitability 3.9 · impact 6
v3.110criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · CISA US
v3.110criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · Siemens ProductCERT DE
v3.110criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · NCSC-NL NL
v4.010criticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:Hsecondary · ENISA EU
v4.010criticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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
v4.09.1criticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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.

Exploitation: none · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-639USCWE-639USCWE-639USCWE-639US
05

affected products (513)

Products and version ranges known to be affected.

showing 20 of 513
06

advisories (6)

Vendor and ecosystem advisories describing this.

  • NCSC-2026-0005Kwetsbaarheden verholpen in Siemens productenNL2026-01-13csaf · ncsc_nlNL

    Siemens heeft kwetsbaarheden verholpen in diverse producten als Industrial Edge Devices, SCALANCE, SIMATIC, SIPLUS en Telecontrol Server.

  • SSA-001536SSA-001536: Authorization Bypass Vulnerability in Siemens Industrial Edge Devices2026-01-13csaf · siemens_psirtDE

    Siemens Industrial Edge Devices contain an authorization bypass vulnerability that could facilitate an unauthenticated remote attacker to circumvent authentication and impersonate a legitimate user. Siemens has released new versions for the affected products and recommends to update to the latest versions.

  • SSA-014678SSA-014678: Authorization Bypass Vulnerability in Industrial Edge Device Kit2026-01-13csaf · siemens_psirtDE

    Users of Industrial Edge Devices are advised to consult the respective Security Advisories for their devices (for Siemens Industrial Edge devices see Additional Information). Industrial Edge Device Kit contains an authorization bypass vulnerability that could facilitate an unauthenticated remote attacker to circumvent authentication and impersonate a legitimate user. Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where fixes are not, or not yet available.

  • WID-SEC-W-2026-0073Siemens Industrial Edge Devices: Schwachstelle ermöglicht das Erlangen von NutzerrechtenDeutsch2026-01-12csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Siemens Industrial Edge Devices ausnutzen, um Nutzerrechte zu erlangen.

  • ICSA-26-015-08Siemens Industrial Edge Devices2026-01-13icsa · cisa_csaf_otUS

    Siemens Industrial Edge Devices contain an authorization bypass vulnerability that could facilitate an unauthenticated remote attacker to circumvent authentication and impersonate a legitimate user. Siemens has released new versions for the affected products and recommends to update to the latest versions.

  • ICSA-26-015-09Siemens Industrial Edge Device Kit2026-01-13icsa · cisa_csaf_otUS

    Users of Industrial Edge Devices are advised to consult the respective Security Advisories for their devices (for Siemens Industrial Edge devices see Additional Information). Industrial Edge Device Kit contains an authorization bypass vulnerability that could facilitate an unauthenticated remote attacker to circumvent authentication and impersonate a legitimate user. Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where fixes are not, or not yet available.

07

also known as (3)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdcert_bundcisa_csaf_otncsc_nlsiemens_psirtNVDCVE.orgMITRE
published 2026-01-13modified 2026-06-17
09

references (6)

External citations — patches, advisories, analysis.

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