CVE-2025-40800

highpriority · track · 0EPSS 0.002 · 11 %ileDEEUNLRUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.21% (11th) EPSS

CVSS 7.4 · high

Is it mine?

68 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 COMOS V10.6 (All versions < V10.6.1), COMOS V10.6 (All versions < V10.6.1), NX V2412 (All versions < V2412.8700), NX V2506 (All versions < V2506.6000), Simcenter 3D (All versions < V2506.6000), Simcenter Femap (All versions < V2506.0002), Solid Edge SE2025 (All versions < V225.0 Update 10), Solid Edge SE2026 (All versions < V226.0 Update 1). The IAM client in affected products is missing server certificate validation while establishing TLS connections to the authorization server. This could allow an attacker to perform a man-in-the-middle attack.

remediations

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

A vendor fix is available.

FixedCOMOS V10.6siemens_psirt
Update to V10.6.1 or later version
https://support.sw.siemens.com/product/222981661/
FixedNX V2412siemens_psirt
Update to V2412.8700 or later version
https://support.sw.siemens.com/product/209349590/
FixedNX V2506siemens_psirt
Update to V2506.6000 or later version
https://support.sw.siemens.com/product/209349590/
FixedSimcenter 3Dsiemens_psirt
Update to V2506.6000 or later version
https://support.sw.siemens.com/product/289054037/
FixedSimcenter Femapsiemens_psirt
Update to V2506.0002 or later version
https://support.sw.siemens.com/product/275652363/
FixedSolid Edge SE2025siemens_psirt
Update to V225.0 Update 10 or later version
https://support.sw.siemens.com/product/246738425/
FixedSolid Edge SE2026siemens_psirt
Update to V226.0 Update 1 or later version
https://support.sw.siemens.com/product/246738425/
FixedCOMOS V10.6cisa_csaf_ot
Update to V10.6.1 or later version
https://support.sw.siemens.com/product/222981661/
FixedNX V2412cisa_csaf_ot
Update to V2412.8700 or later version
https://support.sw.siemens.com/product/209349590/
FixedNX V2506cisa_csaf_ot
Update to V2506.6000 or later version
https://support.sw.siemens.com/product/209349590/
FixedSimcenter 3Dcisa_csaf_ot
Update to V2506.6000 or later version
https://support.sw.siemens.com/product/289054037/
FixedSimcenter Femapcisa_csaf_ot
Update to V2506.0002 or later version
https://support.sw.siemens.com/product/275652363/
FixedSolid Edge SE2025cisa_csaf_ot
Update to V225.0 Update 10 or later version
https://support.sw.siemens.com/product/246738425/
FixedSolid Edge SE2026cisa_csaf_ot
Update to V226.0 Update 1 or later version
https://support.sw.siemens.com/product/246738425/

cvss

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

9.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 6.9–9.1

v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · NCSC-NL NL

v3.17.4highAV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · FSTEC (BDU) RU

v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · productcert@siemens.com DEexploitability 2.2 · impact 5.2

v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · Siemens ProductCERT DE

v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · CISA US

v4.09.1criticalCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:Nsecondary · ENISA EU

v4.09.1criticalCVSS:4.0/AV:N/AC:L/AT:P/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

v4.06.9mediumCVSS:4.0/AV:N/AC:L/AT:P/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)

ssvc

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

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-295USCWE-295USCWE-295USCWE-295USCWE-295US

affected products (68)

Products and version ranges known to be affected.

COMOS V10.6all versionscisa_csaf_otUS
NX V2412all versionscisa_csaf_otUS
NX V2506all versionscisa_csaf_otUS
Simcenter 3Dall versionscisa_csaf_otUS
Simcenter Femapall versionscisa_csaf_otUS
Solid Edge SE2025all versionscisa_csaf_otUS
Solid Edge SE2026all versionscisa_csaf_otUS
Siemens COMOS V10.6≤ vers:intdot/<10.6.1cisa_csaf_otUS
Siemens NX V2412≤ vers:intdot/<2412.8700cisa_csaf_otUS
Siemens NX V2506≤ vers:intdot/<2506.6000cisa_csaf_otUS
Siemens Simcenter 3D≤ vers:intdot/<2506.6000cisa_csaf_otUS
Siemens Simcenter Femap≤ vers:intdot/<2506.0002cisa_csaf_otUS
Siemens Solid Edge SE2025< V225.0_Update_10cisa_csaf_otUS
Siemens Solid Edge SE2026< V226.0_Update_1cisa_csaf_otUS
Siemens COMOS V10.60 → V10.6.1enisa_euvdEU
Siemens NX V24120 → V2412.8700enisa_euvdEU
Siemens NX V25060 → V2506.6000enisa_euvdEU
Siemens Simcenter 3D0 → V2506.6000enisa_euvdEU
Siemens Simcenter Femap0 → V2506.0002enisa_euvdEU
Siemens Solid Edge SE20250 → V225.0 Update 10enisa_euvdEU

showing 20 of 68

advisories (5)

Vendor and ecosystem advisories describing this.

NCSC-2025-0382Kwetsbaarheden verholpen in Siemens productenNL2025-12-09csaf · ncsc_nlNL
Siemens heeft kwetsbaarheden verholpen in diverse producten als Building X, COMOS, Energy Services, Gridscale X, NX, RUGGEDCOM, SICAM, SIMATIC, SINEC, SINEMA, SIPLUS en Solid Edge.
SSA-212953SSA-212953: Multiple Vulnerabilities in COMOS2025-12-09csaf · siemens_psirtDE
COMOS is affected by multiple vulnerabilities that could allow an attacker to execute arbitrary code or cause denial of service condition, data infiltration or perform access control violations. Siemens has released new versions for the affected products and recommends to update to the latest versions.
SSA-868571SSA-868571: Missing Server Certificate Validation in IAM Client2025-12-09csaf · siemens_psirtDE
Multiple Siemens products are affected by improper certificate validation in IAM Client. This could allow an unauthenticated remote attacker to perform man in the middle attacks. Siemens has released new versions for the affected products and recommends to update to the latest versions.
ICSA-25-345-04Siemens IAM Client2025-12-09icsa · cisa_csaf_otUS
Multiple Siemens products are affected by improper certificate validation in IAM Client. This could allow an unauthenticated remote attacker to perform man in the middle attacks. Siemens has released new versions for the affected products and recommends to update to the latest versions.
ICSA-26-043-03Siemens COMOS2025-12-09icsa · cisa_csaf_otUS
COMOS is affected by multiple vulnerabilities that could allow an attacker to execute arbitrary code or cause denial of service condition, data infiltration or perform access control violations. Siemens has released new versions for the affected products and recommends to update to the latest versions.

also known as (6)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisa_csaf_ot ncsc_nl siemens_psirt NVD CVE.org MITRE

published 2025-12-09modified 2026-06-17

references (7)

External citations — patches, advisories, analysis.

scry

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