What’s Vulnerable › Vulnerabilities

CVE-2020-29379

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-11-29 · updated 2026-06-17
• Weakness: CWE-306

Description

An issue was discovered on V-SOL V1600D4L V1.01.49 and V1600D-MINI V1.01.48 OLT devices. During the process of updating the firmware, the update script starts a telnetd -l /bin/sh process that does not require authentication for TELNET access.

Affected products

• Vsolcn V1600D-Mini Firmware: 1.01.48
• Vsolcn V1600D4L Firmware: 1.01.49

References

• https://seclists.org/fulldisclosure/2020/Jul/14
• https://seclists.org/fulldisclosure/2020/Jul/14

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