Security readout for executives and security teams
Plain-English summary
IGSS Definition can be compromised if a malicious Configuration Group File is imported. The listed flaw can lead to remote code execution, so an affected engineering workstation could become a foothold into operational technology environments.
Executive priority
Treat this as high priority where IGSS is used in production engineering or operational environments. The main urgency is preventing malicious configuration-file handling from becoming code execution on trusted systems.
Technical view
CVE-2020-7556 is a CWE-787 out-of-bounds write in IGSS Definition Def.exe version 14.0.0.20247 and prior. The triggering condition described is importing a malicious CGF file into IGSS Definition, with possible remote code execution.
Likely exposure
Exposure appears limited to organizations running IGSS Definition Def.exe version 14.0.0.20247 or earlier, especially where users import CGF configuration files from untrusted or poorly controlled sources.
Exploitation context
The provided bundle does not show CISA KEV listing or confirmed active exploitation. Exploitation is described as file-import triggered, requiring a malicious CGF file to be opened or imported in the affected application.
Researcher notes
Evidence is concise: affected version, CWE-787 class, CGF import trigger, and RCE impact. No CVSS vector, patch version, or public exploit confirmation is included in the supplied bundle.
Mitigation direction
- Review Schneider Electric advisory SEVD-2020-315-03 for vendor fixes and mitigations.
- Upgrade or remediate affected IGSS Definition installations according to vendor guidance.
- Restrict CGF imports to trusted, verified configuration files only.
- Limit IGSS Definition access to authorized engineering workstations and users.
- Quarantine unexpected CGF files received by email, downloads, or removable media.
Validation and detection
- Inventory IGSS Definition installations and record Def.exe versions.
- Flag version 14.0.0.20247 and earlier as potentially affected.
- Review processes controlling CGF file import and approval.
- Check recent CGF import activity for unexpected or untrusted files.
- Confirm remediation status against Schneider Electric and ZDI references.
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-787: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2020-7556 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://www.se.com/ww/en/download/document/SEVD-2020-315-03/CVE reference · x_refsource_MISC
- https://www.zerodayinitiative.com/advisories/ZDI-21-095/CVE 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.