CVE-2020-5758
Grandstream UCM6200 series firmware version 1.0.20.23 and below is vulnerable to OS command injection via HTTP.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.38%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Grandstream UCM6200 series firmware version 1.0.20.23 and below is vulnerable to OS command injection via HTTP. An authenticated remote attacker can execute commands as the root user by sending a crafted HTTP GET to the UCM's "Old" HTTPS API.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 4.38% probability · 91th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-78
- Affected
- grandstream/ucm6202 firmware · grandstream/ucm6204 firmware · grandstream/ucm6208 firmware
- Source
- vulnreport@tenable.com
EPSS 4.4% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://www.tenable.com/security/research/tra-2020-42Broken Link, Third Party Advisory
- https://www.tenable.com/cve/CVE-2020-5758Not Applicable
- https://www.tenable.com/security/research/tra-2020-42Broken Link, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.