OS command injection in Grandstream UCM6200 Series
Priority MEDIUM 52CWE-78Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-78.
Summary
Grandstream UCM6200 series firmware version 1.0.20.23 and below is vulnerable to OS command injection via HTTP. An authenticated remote attacker can bypass command injection mitigations and execute commands as the root user by sending a crafted HTTP POST to the UCM's "New" HTTPS API.
Why it matters now
EPSS 0.06926 94th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Grandstream UCM6200 Series | up to 1.0.20.23 | — | No fix listed | CNA |
- Grandstream UCM6200 Series Vendor— Affected up to 1.0.20.23 Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:grandstream:ucm6202_firmware:*:*:*:*:*:*:*:* | up to 1.0.20.23 | Vulnerable | Grandstream |
| cpe:2.3:h:grandstream:ucm6202:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Grandstream |
| cpe:2.3:o:grandstream:ucm6204_firmware:*:*:*:*:*:*:*:* | up to 1.0.20.23 | Vulnerable | Grandstream |
| cpe:2.3:h:grandstream:ucm6204:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Grandstream |
| cpe:2.3:o:grandstream:ucm6208_firmware:*:*:*:*:*:*:*:* | up to 1.0.20.23 | Vulnerable | Grandstream |
| cpe:2.3:h:grandstream:ucm6208:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Grandstream |
- cpe:2.3:o:grandstream:ucm6202_firmware:*:*:*:*:*:*:*:* Versions up to 1.0.20.23 Vulnerable ·Grandstream
- cpe:2.3:h:grandstream:ucm6202:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Grandstream
- cpe:2.3:o:grandstream:ucm6204_firmware:*:*:*:*:*:*:*:* Versions up to 1.0.20.23 Vulnerable ·Grandstream
- cpe:2.3:h:grandstream:ucm6204:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Grandstream
- cpe:2.3:o:grandstream:ucm6208_firmware:*:*:*:*:*:*:*:* Versions up to 1.0.20.23 Vulnerable ·Grandstream
- cpe:2.3:h:grandstream:ucm6208:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Grandstream
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-5757
- 2026-10-03 Alias added: GHSA-3f9w-43j6-x43v
References
More Grandstream Ucm6202 Firmware vulnerabilities
- TI-2020-04651 Cleartext storage of sensitive information in Grandstream UCM6200 series CVSS 3.1CRITICAL 9.8
- TI-2020-04687 OS command injection in Grandstream UCM6200 Series CVSS 3.1CRITICAL 9.8
- TI-2020-04652 SQL injection in Grandstream UCM6200 series CVSS 3.1HIGH 7.5
- TI-2020-04686 OS command injection in Grandstream UCM6200 Series CVSS 3.1HIGH 8.8
- TI-2020-04654 SQL injection in Grandstream UCM6200 series CVSS 3.1HIGH 7.5
- TI-2020-04653 SQL injection in Grandstream UCM6200 series CVSS 3.1MEDIUM 5.9
Sources
- CVE-2020-5757 · CVE Program
- CVE-2020-5757 · NVD
- FIRST EPSS
- GHSA-3f9w-43j6-x43v · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences