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CVE Record

CVE-2020-7555: A CWE-787 Out-of-bounds Write vulnerability exists in IGSS Definition (Def.exe) version 14.0.0.20247 that c...

A CWE-787 Out-of-bounds Write vulnerability exists in IGSS Definition (Def.exe) version 14.0.0.20247 that could cause Remote Code Execution when malicious CGF (Configuration Group File) file is imported to IGSS Definition.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2020-7555 is a memory corruption flaw in Schneider Electric IGSS Definition. A malicious configuration group file could trigger remote code execution when imported. Business risk is highest where engineering workstations import untrusted CGF files or handle project files from external parties.

Executive priority

Treat this as a high-priority OT workstation risk if IGSS is used. The weakness can lead to code execution, but the provided evidence indicates an import-file scenario rather than confirmed active exploitation.

Technical view

The source describes a CWE-787 out-of-bounds write in IGSS Definition Def.exe version 14.0.0.20247 and prior. The vulnerable path is importing a malicious CGF Configuration Group File into IGSS Definition, potentially causing remote code execution. No CVSS score is provided in the bundle.

Likely exposure

Exposure is likely limited to environments running IGSS Definition Def.exe 14.0.0.20247 or prior, especially engineering or operations workstations that import CGF project/configuration files.

Exploitation context

The bundle supports file-triggered remote code execution through malicious CGF import. It does not show CISA KEV listing, active exploitation, public exploit use, or network-based exploitation without user or workflow interaction.

Researcher notes

Focus analysis on CGF parsing in IGSS Definition Def.exe. Evidence names version 14.0.0.20247 and prior only. Patch specifics, exploit maturity, and CVSS data are not present in the supplied bundle, so validation should stay anchored to vendor advisory details.

Mitigation direction

  • Inventory IGSS Definition installations and identify versions at or before 14.0.0.20247.
  • Check Schneider Electric advisory SEVD-2020-315-03 for supported fixes or workarounds.
  • Apply vendor-provided updates or mitigations where applicable.
  • Restrict CGF imports to trusted sources and approved change-control workflows.
  • Limit IGSS engineering workstation access and isolate from general-purpose browsing or email.

Validation and detection

  • Confirm installed Def.exe versions on IGSS engineering workstations.
  • Review whether CGF files are imported from vendors, contractors, backups, or shared drives.
  • Check recent change records for unexpected or unapproved CGF imports.
  • Verify vendor guidance has been reviewed and applied where relevant.
  • Confirm users cannot import untrusted CGF files outside approved procedures.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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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cwe · low confidence lookup

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.

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description · low confidence lookup

Execution 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.

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cve · low confidence lookup

CVE-2020-7555 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/aIGSS Definition (Def.exe) version 14.0.0.20247 and priorIGSS Definition (Def.exe) version 14.0.0.20247 and priorListed
Weakness

CWE details

CWE-787

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.