CVE-2025-40818

lowpriority · track · 0EPSS 0.001 · 1 %ileDEEUNLRUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.10% (1st) EPSS

CVSS 3.3 · low

Is it mine?

39 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-22

A vulnerability has been identified in SINEMA Remote Connect Server (All versions < V3.2 SP4). Affected applications contain private SSL/TLS keys on the server that are not properly protected allowing any user with server access to read these keys. This could allow an authenticated attacker to impersonate the server potentially enabling man-in-the-middle, traffic decryption or unauthorized access to services that trust these certificates.

remediations

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

A vendor fix is available.

FixedSINEMA Remote Connect Serversiemens_psirt
Update to V3.2 SP4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109995084/
FixedSINEMA Remote Connect Servercisa_csaf_ot
Update to V3.2 SP4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109995084/

cvss

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

3.3

010

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

v3.13.3lowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nsecondary · CISA US

v3.13.3lowAV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nsecondary · FSTEC (BDU) RU

v3.13.3lowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nsecondary · ENISA EU

v3.13.3lowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nsecondary · productcert@siemens.com DEexploitability 1.8 · impact 1.4

v3.13.3lowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nsecondary · Siemens ProductCERT DE

v3.13.1lowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.13.3lowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nsecondary · NCSC-NL NL

ssvc

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

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

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

affected products (39)

Products and version ranges known to be affected.

SINEMA Remote Connect Serverall versionscisa_csaf_otUS
Siemens SINEMA Remote Connect Server< V3.2_SP4cisa_csaf_otUS
Siemens SINEMA Remote Connect Server0 → V3.2 SP4enisa_euvdEU
Siemens AG SINEMA Remote Connect Server≤ 3.2 SP4fstec_bduRU
Siemens Building X - Security Manager Edge Controller (ACC-AP)≤ vers:unknown/*ncsc_nlNL
Siemens COMOS V10.4≤ vers:unknown/*ncsc_nlNL
Siemens COMOS V10.4.5≤ vers:unknown/*ncsc_nlNL
Siemens COMOS V10.5≤ vers:unknown/*ncsc_nlNL
Siemens COMOS V10.5.2≤ vers:unknown/*ncsc_nlNL
Siemens COMOS V10.6≤ vers:unknown/*ncsc_nlNL
Siemens Energy Services≤ vers:unknown/*ncsc_nlNL
Siemens Gridscale X Prepay≤ vers:unknown/*ncsc_nlNL
Siemens NX V2412≤ vers:unknown/*ncsc_nlNL
Siemens NX V2506≤ vers:unknown/*ncsc_nlNL
Siemens SICAM≤ vers:unknown/*ncsc_nlNL
Siemens SIMATIC CFU DIQ≤ vers:unknown/*ncsc_nlNL
Siemens SIMATIC CFU PA≤ vers:unknown/*ncsc_nlNL
Siemens SIMATIC CN 4100≤ vers:unknown/*ncsc_nlNL
Siemens SIMATIC ET 200AL IM 157-1 PN≤ vers:unknown/*ncsc_nlNL
Siemens SIMATIC MV540 H Firmware≤ vers:unknown/*ncsc_nlNL

showing 20 of 39

advisories (3)

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-626856SSA-626856: Multiple Vulnerabilities in SINEMA Remote Connect Sever Before V3.2 SP42025-12-09csaf · siemens_psirtDE
SINEMA Remote Connect Server Before V3.2 SP4 is affected by multiple vulnerabilities. Siemens has released a new version for SINEMA Remote Connect Server and recommends to update to the latest version.
ICSA-25-345-06Siemens SINEMA Remote Connect Server2025-12-09icsa · cisa_csaf_otUS
SINEMA Remote Connect Server Before V3.2 SP4 is affected by multiple vulnerabilities. Siemens has released a new version for SINEMA Remote Connect Server and recommends to update to the latest version.

also known as (5)

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 (3)

External citations — patches, advisories, analysis.

scry

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