CVE-2020-7557

Name: CVE-2020-7557
Creator: NVD / NIST
Published: 2020-11-19T22:15:14.66+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 2.40%

Last modified Jun 17, 2026

CVE-2020-7557 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A CWE-125 Out-of-bounds Read 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.. EPSS estimates a 2.40% chance of exploitation in the next 30 days.

Description

A CWE-125 Out-of-bounds Read 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.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

2.40%

81.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Schneider-Electric	Interactive Graphical Scada System	<= 14.0.0.20247

References

https://www.se.com/ww/en/download/document/SEVD-2020-315-03/Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-096/Third Party Advisory, VDB Entry
https://www.se.com/ww/en/download/document/SEVD-2020-315-03/Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-096/Third Party Advisory, VDB Entry

Timeline

Published: Nov 19, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-7557?

How severe is CVE-2020-7557?

CVE-2020-7557 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 2.40% probability of exploitation in the next 30 days.

How do I fix CVE-2020-7557?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-7557?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST