CVE-2020-5763

moderate-risk
Published 2020-07-29

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.

Do I need to act?

~
1.6% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (6)

Ht801 Firmware
Ht802 Firmware
Ht812 Firmware
Ht814 Firmware
Ht818 Firmware
Ht813 Firmware

Affected Vendors

Grandstream

References (4)

Exploit https://www.tenable.com/security/research/tra-2020-43
Third Party Advisory https://www.tenable.com/security/research/tra-2020-47
Exploit https://www.tenable.com/security/research/tra-2020-43
Third Party Advisory https://www.tenable.com/security/research/tra-2020-47
47
/ 100
moderate-risk
Severity 30/34 · Critical
Exploitability 4/34 · Minimal
Exposure 13/34 · Low