Security readout for executives and security teams
Plain-English summary
Schneider Electric Wonderware Information Server Portal versions 4.0 SP1 through 5.5 have an XXE input-validation flaw that could allow arbitrary file reads or denial of service. The provided severity is low, but business risk depends on deployment location and who can access the portal.
Executive priority
Treat as a targeted legacy ICS exposure issue, not a broad emergency. Confirm whether affected WIS Portal versions exist, whether they are reachable, and whether vendor guidance has been applied.
Technical view
The issue is an XML External Entity condition involving an external entity declaration and entity reference. Sources map it to CWE-20 and CVSS v2 2.1, AV:L/AC:L/Au:N/C:P/I:N/A:N, with partial confidentiality impact and no integrity impact stated.
Likely exposure
Exposure is limited to Wonderware Information Server Portal 4.0 SP1, 4.5, 5.0, and 5.5. The bundle marks other versions default unaffected. Internet exposure is not established by the supplied sources.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. It describes potential attacker impact only. The description says remote attackers, while the supplied CVSS vector is local, so validate access assumptions against vendor advisory details.
Researcher notes
Evidence is limited to the provided CVE and CISA references. The affected list is specific, but the bundle does not include patch details. Note the mismatch between remote wording and local CVSS vector when assessing reachability.
Mitigation direction
- Identify any WIS Portal deployments and their exact versions.
- Check Schneider Electric and CISA advisory guidance for available updates or compensating controls.
- Restrict portal access to trusted administrative networks where feasible.
- Review XML parsing configuration and vendor-supported hardening guidance.
- Prioritize replacement or upgrade for affected legacy deployments.
Validation and detection
- Inventory WIS Portal assets and confirm versions against the affected list.
- Verify whether the portal is reachable from untrusted networks.
- Review logs for unusual XML-processing errors or file-access anomalies.
- Confirm compensating controls are documented and enforced.
- Track remediation evidence in the vulnerability management record.
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-20: Exact CWE lookup
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Open ATT&CK lookupCVE-2014-5398 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
- Low
- CVSS
- 2.1 (2.0)
- Known Exploited
- No
- Published
Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
AV:L/AC:L/Au:N/C:P/I:N/A:N3.92.9Primary CVE scoreVulnerability scoring details
Base CVSS 2.0 score
2.1LowVector: AV:L/AC:L/Au:N/C:P/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cisa.gov/news-events/ics-advisories/icsa-14-238-02CVE reference
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2014/icsa-14-238-02.jsonCVE reference
- https://ics-cert.us-cert.gov/advisories/ICSA-14-238-02CVE reference · x_refsource_MISC, x_transferred
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.