Security readout for executives and security teams
Plain-English summary
CVE-2020-7553 affects IGSS Definition (Def.exe), used in the IGSS configuration workflow. A malicious CGF import can corrupt memory and may allow remote code execution on the system running Definition. The provided bundle does not include CVSS or confirmed fix details, so prioritize inventory and vendor-advisory review.
Executive priority
Treat this as high priority where IGSS supports operational technology or critical process environments. The impact is potentially code execution, but exploitation evidence is not shown in the supplied sources.
Technical view
The CVE describes a CWE-787 out-of-bounds write in IGSS Definition (Def.exe) version 14.0.0.20247 and prior. The stated trigger is importing a malicious CGF Configuration Group File into IGSS Definition, with possible remote code execution. No exploit details, CVSS vector, or patch version are included in the supplied bundle.
Likely exposure
Exposure is likely limited to environments using IGSS Definition version 14.0.0.20247 or earlier, especially engineering or operations workstations that import CGF files.
Exploitation context
The bundle marks this CVE as not in KEV and provides no evidence of active exploitation. The stated attack path depends on a malicious CGF file being imported into IGSS Definition.
Researcher notes
Key gaps are CVSS details, exact fixed version, and vendor mitigation specifics. Validate exposure through installed Def.exe versions and CGF import workflows; avoid assuming network exploitability from the supplied description alone.
Mitigation direction
- Review Schneider Electric advisory SEVD-2020-315-03 for vendor fixes or mitigations.
- Inventory IGSS Definition installations and versions across engineering workstations.
- Restrict CGF imports to trusted, validated configuration files only.
- Reduce access to systems that run IGSS Definition until remediation is confirmed.
Validation and detection
- Confirm whether Def.exe version is 14.0.0.20247 or earlier.
- Identify users and systems authorized to import CGF files.
- Review recent CGF imports for untrusted or unexpected sources.
- Track remediation status against Schneider Electric guidance.
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-2020-7553 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://www.se.com/ww/en/download/document/SEVD-2020-315-03/CVE reference · x_refsource_MISC
- https://www.zerodayinitiative.com/advisories/ZDI-21-124/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.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.