CVE-2020-5763

HIGH

Grandstream HT800 Series Firmware < 1.0.17.5 - Authenticated Backdoor Root Shell via SSH Challenge

Title source: llm
STIX 2.1

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.

References (2)

Core 2
Core References
Exploit, Third Party Advisory x_refsource_misc
https://www.tenable.com/security/research/tra-2020-43
Third Party Advisory, VDB Entry x_refsource_misc
https://www.tenable.com/security/research/tra-2020-47

Scores

CVSS v3 8.8
EPSS 0.0273
EPSS Percentile 84.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-489 CWE-326
Status published
Products (6)
grandstream/ht801_firmware < 1.0.17.5
grandstream/ht802_firmware < 1.0.17.5
grandstream/ht812_firmware < 1.0.17.5
grandstream/ht813_firmware < 1.0.17.5
grandstream/ht814_firmware < 1.0.17.5
grandstream/ht818_firmware < 1.0.17.5
Published Jul 29, 2020
Tracked Since Feb 18, 2026