CVE-2020-5726
The Grandstream UCM6200 series before 1.0.20.22 is vulnerable to an SQL injection via the CTI...
The Grandstream UCM6200 series before 1.0.20.22 is vulnerable to an SQL injection via the CTI server on port 8888. A remote unauthenticated attacker can invoke the challenge action with a crafted username and discover user passwords.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
The Grandstream UCM6200 series before 1.0.20.22 is vulnerable to an SQL injection via the CTI server on port 8888. A remote unauthenticated attacker can invoke the challenge action with a crafted username and discover user passwords.
- Record
CVE-2020-5726- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-89
- Updated
- 2026-11-02
CVE List No score
The Grandstream UCM6200 series before 1.0.20.22 is vulnerable to an SQL injection via the CTI server on port 8888. A remote unauthenticated attacker can invoke the challenge action with a crafted username and discover user passwords.
- Record
CVE-2020-5726- Weakness
- CWE-89
- Updated
- 2026-11-02
EUVDEUVD-2020-26885 No score
The Grandstream UCM6200 series before 1.0.20.22 is vulnerable to an SQL injection via the CTI server on port 8888. A remote unauthenticated attacker can invoke the challenge action with a crafted username and discover user passwords.
- Record
EUVD-2020-26885- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-j8g2-wfvh-q3pf No score
The Grandstream UCM6200 series before 1.0.20.22 is vulnerable to an SQL injection via the CTI...
The Grandstream UCM6200 series before 1.0.20.22 is vulnerable to an SQL injection via the CTI server on port 8888. A remote unauthenticated attacker can invoke the challenge action with a crafted username and discover user passwords.
- Record
GHSA-j8g2-wfvh-q3pf- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Grandstream UCM6200 Series CTI Interface - 'user_password' SQL Injection | 2020-03-31 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-5726 is a high vulnerability (CVSS 7.5) in Grandstream Ucm6202 Firmware, published March 30, 2020. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 4.33%, the 91st percentile. No source names a fixed version.