Security readout for executives and security teams
Plain-English summary
CVE-2021-40357 affects Siemens Teamcenter Active Workspace. A path traversal flaw could let an attacker bypass intended access restrictions and reach other services on the same host. The public bundle does not provide CVSS, active exploitation evidence, or detailed preconditions.
Executive priority
Prioritize confirmation for any Teamcenter environments supporting sensitive engineering, manufacturing, or product lifecycle data. Without severity scoring or exploit evidence, urgency depends on exposure and business criticality.
Technical view
The issue is classified as CWE-22 path traversal in Teamcenter Active Workspace V4.3, V5.0, V5.1, and V5.2 below specified maintenance releases. The stated impact is bypassing restrictions, including direct access to other host services. Authentication requirements and attack complexity are not stated in the provided sources.
Likely exposure
Exposure is likely limited to organizations running Siemens Teamcenter Active Workspace versions below V4.3.10, V5.0.8, V5.1.5, or V5.2.1. Internet-facing or broadly reachable deployments would carry greater concern.
Exploitation context
The source bundle does not identify public exploitation, inclusion in CISA KEV, exploit code, or observed attacks. Treat exploitation status as unconfirmed, not absent.
Researcher notes
Key missing details are authentication requirements, reachable paths, affected deployment configurations, and Siemens advisory specifics. Avoid assuming arbitrary file read or remote code execution; the stated impact is restriction bypass and access to other host services.
Mitigation direction
- Check Siemens SSA-413407 for official remediation guidance.
- Upgrade deployments outside the listed vulnerable version ranges.
- Restrict network access to Active Workspace where business operations allow.
- Review host service exposure reachable from the Active Workspace environment.
Validation and detection
- Inventory all Teamcenter Active Workspace versions in use.
- Compare versions against the affected ranges in the CVE record.
- Confirm whether Active Workspace is internet-facing or broadly reachable internally.
- Review access controls around host-local services and adjacent application services.
Public sources used
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
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-40357 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-413407.pdfCVE reference · x_refsource_MISC
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 Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.