CVE-2020-5757

CRITICAL
9.8
CVSS Score
Published: July 17, 2020 at 08:35 PM UTC
Updated: June 17, 2026 at 03:22 AM UTC
7 products affected across 1 vendorUCM6204 FirmwareUCM6202 FirmwareUCM6208 Firmware

Using Grandstream UCM6200 Series by N/A?

Get instant alerts when new vulnerabilities affect Grandstream UCM6200 Series - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
CRITICAL9.8
Exploit prediction
EPSS 7%

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 bypass command injection mitigations and execute commands as the root user by sending a crafted HTTP POST to the UCM's "New" HTTPS API.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 1.0.20.23
v ≤ 1.0.20.23
v ≤ 1.0.20.23
v ≤ 1.0.20.23

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-78

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card