Security readout for executives and security teams
Plain-English summary
ABB PCM600 versions before 2.7 may temporarily store OPC Server IEC61850 passwords insecurely. A local user on an affected workstation could obtain sensitive credentials. The public record does not describe the exact storage location, trigger condition, or attack vector.
Executive priority
Treat this as a targeted OT credential-protection issue. It is not documented as actively exploited, but exposed engineering workstations could leak credentials that support unauthorized access to industrial systems.
Technical view
CVE-2016-4524 is a local information disclosure issue in ABB PCM600 before 2.7 involving improper handling of OPC Server IEC61850 passwords during unspecified temporary circumstances. No CVSS score, CWE, detailed vector, or affected CPE list is provided in the supplied sources.
Likely exposure
Exposure is most likely on engineering or operations workstations running ABB PCM600 before 2.7, especially where IEC61850 OPC Server credentials are configured and local users share access.
Exploitation context
The supplied sources do not show CISA KEV listing or active exploitation. Exploitation is described only as local-user access through unknown vectors, so remote exploitation should not be assumed.
Researcher notes
Key details are missing: temporary condition, storage path, vector, CVSS, and CWE. Analysis should stay bounded to local credential disclosure in ABB PCM600 before 2.7 unless ABB or CISA advisory text provides more specifics.
Mitigation direction
- Inventory ABB PCM600 installations and identify versions before 2.7.
- Consult ABB or CISA advisory guidance for the supported update path.
- Restrict local user access on affected engineering workstations.
- Rotate OPC Server IEC61850 passwords after remediation.
- Review workstation hardening and least-privilege controls.
Validation and detection
- Confirm whether PCM600 is installed and record the exact version.
- Identify systems where IEC61850 OPC Server passwords are configured.
- Check whether affected workstations allow shared or unnecessary local access.
- Verify remediation by confirming upgrade or vendor-approved mitigation status.
- Review logs for unusual local access around affected workstations.
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
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CVE-2016-4524 mapping review
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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://ics-cert.us-cert.gov/advisories/ICSA-16-152-02CVE 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.