What’s Vulnerable › Vulnerabilities

CVE-2020-5725

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-03-30 · updated 2026-06-17
• Weakness: CWE-89

Description

The Grandstream UCM6200 series before 1.0.20.22 is vulnerable to an SQL injection via the HTTP server's websockify endpoint. A remote unauthenticated attacker can invoke the login action with a crafted username and, through the use of timing attacks, can discover user passwords.

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

How to fix

Upgrade to a fixed version: Grandstream Ucm6202 Firmware 1.0.20.22; Grandstream Ucm6204 Firmware 1.0.20.22; Grandstream Ucm6208 Firmware 1.0.20.22. Check the vendor advisory for mitigations.

References

• http://packetstormsecurity.com/files/156976/Grandstream-UCM6200-Series-WebSocket-1.0.20.20-SQL-Injection.html
• https://www.tenable.com/security/research/tra-2020-17
• http://packetstormsecurity.com/files/156976/Grandstream-UCM6200-Series-WebSocket-1.0.20.20-SQL-Injection.html
• https://www.tenable.com/security/research/tra-2020-17

Get alerted when CVE-2020-5725 or the next vulnerability affects your stack