What’s Vulnerable › Vulnerabilities

CVE-2020-5763

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-07-29 · updated 2026-06-17
• Weakness: CWE-489

Description

Grandstream HT800 series firmware version 1.0.17.5 and below contain a backdoor in the SSH service. An authenticated remote attacker can obtain a root shell by correctly answering a challenge prompt.

Affected products

• Grandstream Ht801 Firmware: through 1.0.17.5
• Grandstream Ht802 Firmware: through 1.0.17.5
• Grandstream Ht812 Firmware: through 1.0.17.5
• Grandstream Ht813 Firmware: through 1.0.17.5
• Grandstream Ht814 Firmware: through 1.0.17.5
• Grandstream Ht818 Firmware: through 1.0.17.5

References

• https://www.tenable.com/security/research/tra-2020-43
• https://www.tenable.com/security/research/tra-2020-47
• https://www.tenable.com/security/research/tra-2020-43
• https://www.tenable.com/security/research/tra-2020-47

Get alerted when CVE-2020-5763 or the next vulnerability affects your stack