CVE-2020-5763

HighCVSS 8.8/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-489 CWE-326

Affected software

Vendor	Product	Versions
n/a	Grandstream HT800 Series	Versions 1.0.17.5 and below

References

https://www.tenable.com/security/research/tra-2020-43Exploit, Third Party Advisory
https://www.tenable.com/security/research/tra-2020-47Third Party Advisory, VDB Entry
https://www.tenable.com/security/research/tra-2020-43Exploit, Third Party Advisory
https://www.tenable.com/security/research/tra-2020-47Third Party Advisory, VDB Entry

Timeline

Published: Jul 29, 2020
Last modified: Jun 17, 2026
NVD status: Modified

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