Low Cryptography

CVE-2025-40745 — A vulnerability has been identified in Siemens Software Center (All versions < V3.5.8.2),...

A vulnerability has been identified in Siemens Software Center (All versions < V3.5.8.2), Simcenter 3D (All versions < V2506.6000), Simcenter Femap (All versions < V2506.0002), Simcenter STAR-CCM+ (All versions < V2602), Solid Edge SE2025 (All versions < V225.0 Update 13), Solid Edge SE2026 (All versions < V226.0 Update 04), Tecnomatix Plant Simulation (All versions < V2504.0008). Affected applications do not properly validate client certificates to connect to Analytics Service endpoint. This could allow an unauthenticated remote attacker to perform man in the middle attacks.

Published Apr 14, 2026 · Updated Oct 14, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · CNA: siemens

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.1% (30-day exploitation probability)+0

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.14%

ahead of 3% of scored CVEs · Oct 14, 2026

Affects

Siemens

Simcenter 3d and 7 more

CVSS base

3.7

Low · 3 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation

None

none · proof-of-concept · active

Automatable

can an attacker script the kill-chain steps

Technical impact

Partial

partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

Documented mitigation — cert-portal.siemens.com (NIST National Vulnerability Database)

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Siemens Simcenter 3d, Siemens Simcenter Femap, Siemens Simcenter STAR-CCM+…).
The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
Apply the documented mitigations until a definitive fix is available.
Search available logs for exploit probes matching the vulnerability class (cryptography), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Siemens	Simcenter 3d	< V2506.6000	Vulnerable	CVE Program (cve.org) e CISA ADP
Siemens	Simcenter 3d	< 2506.6000	Vulnerable	NIST National Vulnerability Database
Siemens	Simcenter Femap	< V2506.0002	Vulnerable	CVE Program (cve.org) e CISA ADP
Siemens	Simcenter Femap	< 2506.6000	Vulnerable	NIST National Vulnerability Database
Siemens	Simcenter STAR-CCM+	< V2602	Vulnerable	CVE Program (cve.org) e CISA ADP
Siemens	Simcenter Star-ccm+ Viewer	< 2602	Vulnerable	NIST National Vulnerability Database
Siemens	Software Center	< V3.5.8.2	Vulnerable	CVE Program (cve.org) e CISA ADP
Siemens	Software Center	< 3.5.8.2	Vulnerable	NIST National Vulnerability Database
Siemens	Solid Edge Se2025	version 225.0< 225.0version 225.0-update_0002version 225.0-update_0001version 225.0-update_0012version 225.0-update_0010version 225.0-update_0003version 225.0-update_0004 and 6 more version 225.0-update_0005version 225.0-update_0006version 225.0-update_0007version 225.0-update_0008version 225.0-update_0009version 225.0-update_0011	Vulnerable	NIST National Vulnerability Database
Siemens	Solid Edge Se2025	< V225.0 Update 13	Vulnerable	CVE Program (cve.org) e CISA ADP
Siemens	Solid Edge Se2026	< 226.0version 226.0version 226.0-update_1version 226.0-update_2version 226.0-update_3	Vulnerable	NIST National Vulnerability Database
Siemens	Solid Edge Se2026	< V226.0 Update 04	Vulnerable	CVE Program (cve.org) e CISA ADP
Siemens	Tecnomatix Plant Simulation	< 2504.0008	Vulnerable	NIST National Vulnerability Database
Siemens	Tecnomatix Plant Simulation	< V2504.0008	Vulnerable	CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Network

Attack complexity

High

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
6.3	CVSS 4.0	Medium	—	—	productcert@siemens.com via NIST National Vulnerability Database
6.3	CVSS 4.0	Medium	—	—	siemens via CVE Program (cve.org) e CISA ADP
3.7	CVSS 3.1	Low	2.2	1.4	productcert@siemens.com via NIST National Vulnerability Database
3.7	CVSS 3.1	Low	—	—	GitHub, Inc. via GitHub Security Advisories
3.7	CVSS 3.1	Low	—	—	siemens via CVE Program (cve.org) e CISA ADP

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N (score shown at the top: productcert@siemens.com)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-295 · Improper Certificate Validation

Other CVEs with this weakness →

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 0.14%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
Check TLS negotiations and unexpected certificates in the component’s traffic.

web/proxy/WAF logsnetwork IDS/IPS

Timeline

What happened to this CVE, newest first.

2026
Affected products added · siemens/siemens software center, siemens/simcenter 3d, siemens/simcenter femap, siemens/simcenter star-ccm+, siemens/sol
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
SSVC assessment updated
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 13, 2026
Fix documented
Oct 13, 2026 · NIST National Vulnerability Database
CVSS changed · 3.7
Oct 13, 2026 · NIST National Vulnerability Database
Source status changed · → Analyzed
Oct 13, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 13, 2026 · NIST National Vulnerability Database
CVE published
Apr 14, 2026 · siemens

Source activity

Repeated readings are counted rather than listed.

1× References added · Oct 14, 2026 – Oct 14, 2026
1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

3 on the record

cert-portal.siemens.com/productcert/html/ssa-981622.html
Mitigation, Vendor Advisory, NIST National Vulnerability Database
github.com/advisories/GHSA-vv4w-99g8-93pp
GitHub Security Advisories
nvd.nist.gov/vuln/detail/CVE-2025-40745
GitHub Security Advisories

Elsewhere on this site

Siemens
every CVE for this vendor

Cryptography
same class

CWE-295
other pages naming this weakness

Related CVEs (same products)

Medium CVE-2026-110936 Uncontrolled Search Path Element in Siemens Software Center 7h
High CVE-2026-50064 Out-of-bounds Write in Siemens Solid Edge Se2025 Aug 11, 2026
High CVE-2026-50061 Use After Free in Siemens Solid Edge Se2025 Aug 11, 2026
High CVE-2026-50062 Out-of-bounds Read in Siemens Solid Edge Se2025 Aug 11, 2026
High CVE-2026-50060 Use After Free in Siemens Solid Edge Se2025 Aug 11, 2026
High CVE-2026-50059 Out-of-bounds Write in Siemens Solid Edge Se2025 Aug 11, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2025-40745 is "A vulnerability has been identified in Siemens Software Center (All versions < V3.5.8.2),...", rated Low. It affects Simcenter 3d (Siemens); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 3.7 describes technical severity. EPSS 0.14% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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