What’s Vulnerable › Vulnerabilities

CVE-2020-35729

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 88.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-12-27 · updated 2026-06-17
• Weakness: CWE-78

Description

KLog Server 2.4.1 allows OS command injection via shell metacharacters in the actions/authenticate.php user parameter.

Affected products

• Klogserver Klog Server: 2.4.1

References

• http://packetstormsecurity.com/files/160798/Klog-Server-2.4.1-Command-Injection.html
• http://packetstormsecurity.com/files/161123/Klog-Server-2.4.1-Command-Injection.html
• http://packetstormsecurity.com/files/161410/Klog-Server-2.4.1-Command-Injection.html
• https://github.com/mustgundogdu/Research/blob/main/KLOG_SERVER/Exploit_Code
• https://github.com/mustgundogdu/Research/blob/main/KLOG_SERVER/README.md
• http://packetstormsecurity.com/files/160798/Klog-Server-2.4.1-Command-Injection.html
• http://packetstormsecurity.com/files/161123/Klog-Server-2.4.1-Command-Injection.html
• http://packetstormsecurity.com/files/161410/Klog-Server-2.4.1-Command-Injection.html
• https://github.com/mustgundogdu/Research/blob/main/KLOG_SERVER/Exploit_Code
• https://github.com/mustgundogdu/Research/blob/main/KLOG_SERVER/README.md

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