CVE-2020-5723: Grandstream UCM6202 Firmware

Critical severity, CVSS 9.8. EPSS: 5.9% chance of exploitation in the next 30 days.

The UCM6200 series 1.0.20.22 and below stores unencrypted user passwords in an SQLite database. This could allow an attacker to retrieve all passwords and possibly gain elevated privileges.

Affected products

• Grandstream UCM6202 Firmware: before 1.0.20.22 (fixed in 1.0.20.22)
• Grandstream UCM6204 Firmware: before 1.0.20.22 (fixed in 1.0.20.22)
• Grandstream UCM6208 Firmware: before 1.0.20.22 (fixed in 1.0.20.22)

Published 2020-03-30. Last modified 2026-06-17.