CVE-2020-5722
CriticalExploitedPublic exploitThe HTTP interface of the Grandstream UCM6200 series is vulnerable to an unauthenticated remote SQL injection via crafted HTTP request.
Published Mar 23, 2020 · Updated Oct 31, 2025
Key Facts
Patch immediately- CVE-2020-5722 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Ucm6200 Firmware (Grandstream), Grandstream UCM6200 Series.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Apr 3, 2020. Public exploit code is available.
- EPSS estimates a 84% probability of exploitation in the next 30 days.
- Fixed versions are available, including Ucm6200 Firmware 1.0.19.20.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
84%
Higher than 99.6% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2020-5722 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
The HTTP interface of the Grandstream UCM6200 series is vulnerable to an unauthenticated remote SQL injection via crafted HTTP request. An attacker can use this vulnerability to execute shell commands as root on versions before 1.0.19.20 or inject HTML in password recovery emails in versions before 1.0.20.17.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Jan 28, 2022 | Jul 28, 2022 | Not reported |
| Industry KEV feed | Apr 3, 2020 | Jul 28, 2022 | Not reported |
| CIRCL KEV | Jan 28, 2022 | Jul 28, 2022 | Not reported |
| ENISA EUVD | Jan 28, 2022 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Ucm6200 FirmwareGrandstream | See advisory | 1.0.19.20 |
| Grandstream UCM6200 Series | >= Before 1.0.20.17 | n/a |
Patched Releases
Ucm6200 Firmware
1.0.19.20
Timeline
Publicly disclosed
Mar 23, 2020
Added to Industry KEV feed
Apr 3, 2020
Added to CISA KEV
Jan 28, 2022
Added to CIRCL KEV
Jan 28, 2022
Added to ENISA EUVD
Jan 28, 2022
Last updated
Oct 31, 2025
Weakness Type
- CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
References
- exploithttp://packetstormsecurity.com/files/156876/UCM6202-1.0.18.13-Remote-Command-Injection.html
- exploithttp://packetstormsecurity.com/files/165708/Grandstream-UCM62xx-IP-PBX-sendPasswordEmail-Remote-Code-Execution.html
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
The HTTP interface of the Grandstream UCM6200 series is vulnerable to an unauthenticated remote SQL injection via crafted HTTP request.
Affected: Ucm6200 Firmware (Grandstream); Grandstream UCM6200 Series versions >= Before 1.0.20.17. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Apr 3, 2020.
Yes. It was added on Jan 28, 2022 with a federal remediation due date of Jul 28, 2022.
Public exploit code is available.
Fixed versions are available, including Ucm6200 Firmware 1.0.19.20.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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