Security readout for executives and security teams
This issue can stop affected Siemens SIMATIC S7-400 CPUs by triggering a denial-of-service condition. The controller remains in DEFECT mode until someone manually restarts it, so the business risk is operational interruption rather than data theft. Likely exposure is limited to environments running the listed SIMATIC S7-400 or S7-400H CPU hardware and firmware versions. Risk is highest where S7 communication is reachable from less-trusted networks, engineering workstations, remote access paths, or shared industrial network segments. Prioritize if these PLCs support production, safety-adjacent operations, or high-availability industrial processes. The issue can create downtime requiring manual recovery, so urgency depends on controller criticality and network reachability. Mitigation focus: Review Siemens SSA-914382 for official remediation guidance.; Update S7-400 hardware version 5.0 firmware to V5.2 or later where applicable.; For all-versions-affected hardware, confirm Siemens-supported replacement or compensating controls..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CWE-20: Exact CWE lookup
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Open ATT&CK lookupCVE-2018-4850 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://cert-portal.siemens.com/productcert/pdf/ssa-914382.pdfCVE reference · x_refsource_CONFIRM
- https://www.siemens.com/global/en/home/products/services/cert.html#SecurityPublicationsCVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.