Overview
- Description
- A OS command injection vulnerability in the CGI program of Zyxel USG FLEX 100(W) firmware versions 5.00 through 5.21 Patch 1, USG FLEX 200 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 500 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 700 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 50(W) firmware versions 5.10 through 5.21 Patch 1, USG20(W)-VPN firmware versions 5.10 through 5.21 Patch 1, ATP series firmware versions 5.10 through 5.21 Patch 1, VPN series firmware versions 4.60 through 5.21 Patch 1, which could allow an attacker to modify specific files and then execute some OS commands on a vulnerable device.
- Source
- security@zyxel.com.tw
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 9.8
- Impact score
- 5.9
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Severity
- CRITICAL
CVSS 2.0
- Type
- Primary
- Base score
- 10
- Impact score
- 10
- Exploitability score
- 10
- Vector string
- AV:N/AC:L/Au:N/C:C/I:C/A:C
Known exploits
Data from CISA
- Vulnerability name
- Zyxel Multiple Firewalls OS Command Injection Vulnerability
- Exploit added on
- May 16, 2022
- Exploit action due
- Jun 6, 2022
- Required action
- Apply updates per vendor instructions.
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:usg_flex_100w_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C07FAFDD-18ED-4BDE-9D35-BFF93C2FF276",
"versionEndExcluding": "5.30",
"versionStartIncluding": "5.00"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:usg_flex_100w:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "D74ABA7E-AA78-4A13-A64E-C44021591B42"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:usg_flex_200_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "AD4726D4-52AF-4584-AB05-2BF4767E5BC1",
"versionEndExcluding": "5.30",
"versionStartIncluding": "5.00"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:usg_flex_200:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "F93B6A06-2951-46D2-A7E1-103D7318D612"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:usg_flex_500_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "37470C96-3006-4265-A5B6-054D44055060",
"versionEndIncluding": "5.30",
"versionStartIncluding": "5.00"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:usg_flex_500:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "92C697A5-D1D3-4FF0-9C43-D27B18181958"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:usg_flex_700_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0AF2483B-9C56-4A69-B374-8C88D2705E65",
"versionEndExcluding": "5.30",
"versionStartIncluding": "5.00"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:usg_flex_700:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "9D1396E3-731B-4D05-A3F8-F3ABB80D5C29"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:vpn100_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5D2BC1AF-C8A7-4D60-870C-D5C6EF289ADA",
"versionEndExcluding": "5.30",
"versionStartIncluding": "4.60"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:vpn100:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "81D90A7B-174F-40A1-8AF4-08B15B7BAC40"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:vpn1000_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "FB23E9D6-3515-46D5-A2C4-76D6E003ECFC",
"versionEndExcluding": "5.30",
"versionStartIncluding": "4.60"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:vpn1000:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "EECD311A-4E96-4576-AADF-47291EDE3559"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:vpn300_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "434CE377-1F94-4AC1-AB14-0ED4A659D37D",
"versionEndExcluding": "5.30",
"versionStartIncluding": "4.60"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:vpn300:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "3C45C303-1A95-4245-B242-3AB9B9106CD4"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:vpn50_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "2E4038EB-C5E0-409F-AD88-4C2E6EDA3A3F",
"versionEndExcluding": "5.30",
"versionStartIncluding": "4.60"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:vpn50:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "9E3AC823-0ECA-42D8-8312-2FBE5914E4C0"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:atp100_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "73E839CA-AB89-4A58-9614-F7E7905BDBBC",
"versionEndExcluding": "5.30",
"versionStartIncluding": "5.10"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:atp100:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "7F7654A1-3806-41C7-82D4-46B0CD7EE53B"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:atp100w_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "4C5E9252-2297-4371-9A3C-DC94402B5EB8",
"versionEndExcluding": "5.30",
"versionStartIncluding": "5.10"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:atp100w:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "47398FD0-6C5E-4625-9EFD-DE08C9AB7DB2"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:atp200_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C866B1BE-19EC-43AE-BBA4-3844A0A4FEB2",
"versionEndExcluding": "5.30",
"versionStartIncluding": "5.10"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:atp200:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "D68A36FF-8CAF-401C-9F18-94F3A2405CF4"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:atp500_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "3518DDB4-C6B2-4047-8D07-67A5CFA09DD6",
"versionEndExcluding": "5.30",
"versionStartIncluding": "5.10"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:atp500:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "2818E8AC-FFEE-4DF9-BF3F-C75166C0E851"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:atp700_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "CA0953D6-AC1A-4C2C-90E8-217590852ACD",
"versionEndExcluding": "5.30",
"versionStartIncluding": "5.10"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:atp700:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "0B41F437-855B-4490-8011-DF59887BE6D5"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:atp800_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "AD8831D8-D40C-4A85-9F74-58067A241F73",
"versionEndExcluding": "5.30",
"versionStartIncluding": "5.10"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:atp800:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "66B99746-0589-46E6-9CBD-F38619AD97DC"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:usg_flex_50w_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D8D00C93-69CF-4FA9-9A67-B053FECBBAC7",
"versionEndExcluding": "5.30",
"versionStartIncluding": "5.10"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:usg_flex_50w:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "110A1CA4-0170-4834-8281-0A3E14FC5584"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:usg20w-vpn_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C639F04A-8810-4445-BE88-2E6FF1D9C3C5",
"versionEndExcluding": "5.30",
"versionStartIncluding": "5.10"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:usg20w-vpn:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "06D2AD3A-9197-487D-A267-24DE332CC66B"
}
],
"operator": "OR"
}
],
"operator": "AND"
}
]