High severity8.8NVD Advisory· Published Jul 29, 2020· Updated Jun 17, 2026

CVE-2020-5763

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Grandstream/Ht801 Firmware
cpe:2.3:o:grandstream:ht801_firmware:*:*:*:*:*:*:*:*
Range: <=1.0.17.5
Grandstream/Ht802 Firmware
cpe:2.3:o:grandstream:ht802_firmware:*:*:*:*:*:*:*:*
Range: <=1.0.17.5
Grandstream/Ht812 Firmware
cpe:2.3:o:grandstream:ht812_firmware:*:*:*:*:*:*:*:*
Range: <=1.0.17.5
Grandstream/Ht813 Firmware
cpe:2.3:o:grandstream:ht813_firmware:*:*:*:*:*:*:*:*
Range: <=1.0.17.5
Grandstream/Ht814 Firmware
cpe:2.3:o:grandstream:ht814_firmware:*:*:*:*:*:*:*:*
Range: <=1.0.17.5
Grandstream/Ht818 Firmware
cpe:2.3:o:grandstream:ht818_firmware:*:*:*:*:*:*:*:*
Range: <=1.0.17.5
Grandstream/HT800 series firmwaredescription
Grandstream/HT800 seriesllm-fuzzy
Range: <=1.0.17.5

Patches

Vulnerability mechanics

References

www.tenable.com/security/research/tra-2020-43nvdExploitThird Party Advisory
www.tenable.com/security/research/tra-2020-47nvdThird Party AdvisoryVDB Entry

News mentions

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cvss	0.572
epss	0.002
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000