What is the CVSS score of CVE-2020-5763?

CVE-2020-5763 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 2.7%.

Is there a public PoC exploit available for CVE-2020-5763?

Yes, a public proof-of-concept exploit is available for CVE-2020-5763. Prioritise patching immediately. EPSS: 2.7%.

Ht801 Firmware CVE-2020-5763

HIGH

Active Debug Code (CWE-489)

2020-07-29 vulnreport@tenable.com

Information Disclosure Ht801 Firmware Ht802 Firmware Ht812 Firmware Ht814 Firmware Ht818 Firmware Ht813 Firmware

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Jul 29, 2020 - 19:15 nvd

HIGH 8.8

DescriptionNVD

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.

AnalysisAI

Grandstream HT800 series firmware version 1.0.17.5 and below contain a backdoor in the SSH service. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-489. 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 products include: Grandstream Ht801 Firmware, Grandstream Ht802 Firmware, Grandstream Ht812 Firmware, Grandstream Ht814 Firmware, Grandstream Ht818 Firmware. Version information: version 1.0.17.5.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.