What’s Vulnerable › Vulnerabilities

CVE-2020-6143

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 6.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-09-01 · updated 2026-06-17
• Weakness: CWE-96

Description

A remote code execution vulnerability exists in the install functionality of OS4Ed openSIS 7.4. The password variable which is set at line 122 in install/Step5.php allows for injection of PHP code into the Data.php file that it writes. An attacker can send an HTTP request to trigger this vulnerability.

Affected products

• OS4ED openSIS-Classic: 7.4

References

• https://talosintelligence.com/vulnerability_reports/TALOS-2020-1083
• https://talosintelligence.com/vulnerability_reports/TALOS-2020-1083

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