Vulnerability Details : CVE-2020-5763
Potential exploit
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.
Products affected by CVE-2020-5763
- cpe:2.3:o:grandstream:ht802_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:grandstream:ht801_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:grandstream:ht812_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:grandstream:ht814_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:grandstream:ht818_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:grandstream:ht813_firmware:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-5763
0.48%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 75 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-5763
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
9.0
|
HIGH | AV:N/AC:L/Au:S/C:C/I:C/A:C |
8.0
|
10.0
|
NIST | |
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2020-5763
-
The product stores or transmits sensitive data using an encryption scheme that is theoretically sound, but is not strong enough for the level of protection required.Assigned by: nvd@nist.gov (Primary)
-
The product is deployed to unauthorized actors with debugging code still enabled or active, which can create unintended entry points or expose sensitive information.Assigned by: vulnreport@tenable.com (Secondary)
References for CVE-2020-5763
-
https://www.tenable.com/security/research/tra-2020-43
Grandstream ATA HT800 Series Multiple Vulnerabilities - Research Advisory | TenableĀ®Exploit;Third Party Advisory
-
https://www.tenable.com/security/research/tra-2020-47
Grandstream ATA HT800 Series Multiple Vulnerabilities - Research Advisory | TenableĀ®Third Party Advisory;VDB Entry
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