What’s Vulnerable › Vulnerabilities

CVE-2020-6656: File parsing Type Confusion Remote code execution vulerability

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-01-07 · updated 2026-06-17
• Weakness: CWE-20

Description

Eaton's easySoft software v7.xx prior to v7.22 are susceptible to file parsing type confusion remote code execution vulnerability. A malicious entity can execute a malicious code or make the application crash by tricking user upload a malformed .E70 file in the application. The vulnerability arises due to improper validation of user data supplied through E70 file which is causing Type Confusion.

Affected products

• Eaton easySoft Software: from 7.00 before 7.20 — fixed in 7.20

How to fix

Upgrade to a fixed version: Eaton easySoft Software 7.20. Check the vendor advisory for mitigations.

References

• https://us-cert.cisa.gov/ics/advisories/icsa-21-007-03
• https://www.eaton.com/content/dam/eaton/company/news-insights/cybersecurity/security-bulletins/easySoft-eaton-vulnerability-advisory.pdf
• https://www.zerodayinitiative.com/advisories/ZDI-20-1441/
• https://www.zerodayinitiative.com/advisories/ZDI-20-1442/
• https://www.zerodayinitiative.com/advisories/ZDI-20-1444/
• https://us-cert.cisa.gov/ics/advisories/icsa-21-007-03
• https://www.eaton.com/content/dam/eaton/company/news-insights/cybersecurity/security-bulletins/easySoft-eaton-vulnerability-advisory.pdf
• https://www.zerodayinitiative.com/advisories/ZDI-20-1441/
• https://www.zerodayinitiative.com/advisories/ZDI-20-1442/
• https://www.zerodayinitiative.com/advisories/ZDI-20-1444/

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