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Vulnerability record · CVE-2020-20184 · published 14 December 2020

CVE-2020-20184: Liftoffsoftware gateone os command injection vulnerability

LLiftoffsoftware · Gateone

GateOne allows remote attackers to execute arbitrary commands via shell metacharacters in the port field when attempting an SSH connection.

9.8 CVSS 3.1 Critical EPSS 2.7% · top 14.7% CWE-78 · OS command injection
9.8CVSS 3.1 base score, v2 7.5
2.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

GateOne allows remote attackers to execute arbitrary commands via shell metacharacters in the port field when attempting an SSH connection.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/liftoff/GateOne/issues/736 ExploitThird Party Advisory
https://github.com/liftoff/GateOne/issues/736 ExploitThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2020-20184), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.