CVE-2020-29376

An issue was discovered on V-SOL V1600D V2.03.69 and V2.03.57, V1600D4L V1.01.49, V1600D-MINI V1.01.48, V1600G1 V2.0.7 and V1.9.7, and V1600G2 V1.1.4 OLT…

published November 29, 2020

CVSS
—
EPSS
1%
Percentile
66.0
In the wild
Unconfirmed
What it is

⚠️ A hidden gem of a password is the key here! The admin account on several V-SOL devices uses an easily guessable password for the TELNET service — like a hospitality suite that forgot to change the welcome mat's code! Picture a hotel with a front desk that uses 'guest123' as the only code to access all rooms. Any intruder could waltz right in without breaking a sweat, thanks to a password that nobody bothered to change. If an attacker discovers this password, they could gain access to the device and manipulate settings or gain unauthorized control. This could lead to service disruptions, unauthorized data access, or even complete system takeover — absolutely devastating!

Put simply

Picture a hotel with a front desk that uses 'guest123' as the only code to access all rooms. Any intruder could waltz right in without breaking a sweat, thanks to a password that nobody bothered to change. The vulnerability arises from the use of a default or weak password for the admin account on V-SOL OLT devices. This allows anyone with knowledge of the password to authenticate to the TELNET service and access sensitive device configurations.

What to do

If an attacker discovers this password, they could gain access to the device and manipulate settings or gain unauthorized control. This could lead to service disruptions, unauthorized data access, or even complete system takeover — absolutely devastating! Change the default admin password to a strong, unique password immediately. Further, consider disabling TELNET in favor of more secure protocols like SSH to enhance security. Regularly review and update device configurations to mitigate future risks. You've got this! By taking these steps, you’ll lock down your devices and keep the internet a safer place. 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01122 · 66.0th percentile
Published
2020-11-29T00:47Z
EPSS history
Timeline
  • 29 NOV 00:47Z
    An issue was discovered on V-SOL V1600D V2.03.69 and V2.03.57, V1600D4L V1.01.49, V1600D-MINI V1.01.48, V1600G1 V2.0.7 and V1.9.7, and V1600G2 V1.1.4 OLT…
    cvelistv5