VulnerabilityModified
CVE-2020-5763
An authenticated remote attacker can obtain a root shell by correctly answering a challenge prompt.
HIGH 8.8EPSS 2.73%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.73%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.73% probability · 85th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-489, CWE-326
- Affected
- grandstream/ht801 firmware · grandstream/ht802 firmware · grandstream/ht812 firmware · grandstream/ht814 firmware · grandstream/ht818 firmware · grandstream/ht813 firmware
- Source
- vulnreport@tenable.com
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.