Security readout for executives and security teams
Plain-English summary
This flaw affects IGSS Definition, an engineering/configuration tool. If a user imports a malicious CGF configuration file, the tool could read memory out of bounds and potentially run attacker-controlled code. The business risk is highest for engineering workstations that handle configuration files from outside trusted change-control paths.
Executive priority
Prioritize assessment where IGSS supports operational or industrial environments. The issue can lead to code execution, but available evidence points to a file-import attack path, not internet-exposed remote exploitation.
Technical view
CVE-2020-7557 is a CWE-125 out-of-bounds read in IGSS Definition Def.exe version 14.0.0.20247 and prior. The published description says malicious CGF import could cause remote code execution. No CVSS score, CPE list, or confirmed active exploitation is provided in the source bundle.
Likely exposure
Exposure is likely limited to organizations using IGSS Definition Def.exe 14.0.0.20247 or earlier, especially systems where CGF files are imported for engineering, configuration, or operational changes.
Exploitation context
The documented trigger is importing a malicious CGF file into IGSS Definition. The bundle does not show CISA KEV listing or other evidence of active exploitation, so exploitation should not be described as confirmed in the wild.
Researcher notes
The public bundle is sparse: affected version and vulnerability class are clear, but CVSS, exact fixed versions, and detailed remediation are not included. Avoid asserting exploit availability or active exploitation without additional cited evidence.
Mitigation direction
- Inventory IGSS Definition installations and confirm Def.exe versions.
- Review Schneider Electric advisory SEVD-2020-315-03 for vendor remediation guidance.
- Restrict CGF imports to trusted, change-controlled sources.
- Treat received CGF files as untrusted until validated.
- Limit access to engineering workstations running affected IGSS software.
Validation and detection
- Check whether Def.exe is version 14.0.0.20247 or earlier.
- Identify users and systems that import CGF files.
- Review recent CGF import activity for unexpected sources.
- Confirm vendor guidance has been applied or formally risk-accepted.
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-125: 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-2020-7557 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-21-096/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 Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.