What’s Vulnerable › Vulnerabilities

CVE-2020-7498

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-06-16 · updated 2026-06-17
• Weakness: CWE-798

Description

A CWE-798: Use of Hard-coded Credentials vulnerability exists in the Unity Loader and OS Loader Software (all versions). The fixed credentials are used to simplify file transfer. Today the use of fixed credentials is considered a vulnerability, which could cause unauthorized access to the file transfer service provided by the Modicon PLCs. This could result in various unintended results.

Affected products

• Schneider-Electric Os Loader: all versions
• Schneider-Electric Unity Loader: all versions

References

• https://www.se.com/ww/en/download/document/SEVD-2020-161-02
• https://www.se.com/ww/en/download/document/SEVD-2020-161-02

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