Search/CVE-2025-40938
● CVE — High

CVE-2025-40938

VendorsiemensProductsimatic cn 4100 firmwareDiscoveredDec 9, 2025UpdatedOct 23, 2026

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected device stores sensitive information in the firmware. This could allow an attacker to access and misuse this information, potentially impacting the device’s confidentiality, integrity, and availability.

View graph Watch Export
CVSS v3.1
8.1 HIGH
EPSS
0.38%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Aug 16, 2026 → Sep 5, 2026
● 0.01pp
0.37% → 0.38% over 2 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityHIGH
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
ConfidentialityHIGH
IntegrityHIGH
AvailabilityHIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Connections
2 relationships
Timeline
disclosure → media coverage
Dec 9, 2025
Disclosure — published as a CVE record. · last revised by NVD Oct 23, 2026