What’s Vulnerable › Vulnerabilities

CVE-2020-5758

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-07-17 · updated 2026-06-17
• Weakness: CWE-78

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.

Affected products

• Grandstream Ucm6202 Firmware: through 1.0.20.23
• Grandstream Ucm6204 Firmware: through 1.0.20.23
• Grandstream Ucm6208 Firmware: through 1.0.20.23

References

• https://www.tenable.com/security/research/tra-2020-42
• https://www.tenable.com/cve/CVE-2020-5758
• https://www.tenable.com/security/research/tra-2020-42

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