CVE-2020-5763: 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…

PriorityP352high8.8CVSS 3.1

AVNACLPRLUINSUCHIHAH

EPSS

2.73%

84.2th percentile

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

6 ranges

Vendor	Product	Version range	Fixed in
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	—

CVSS provenance

nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvdv2.09.0CRITICALAV:N/AC:L/Au:S/C:C/I:C/A:C

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.