CVE-2023-34139 (GCVE-0-2023-34139)
Vulnerability from cvelistv5 – Published: 2023-07-17 17:36 – Updated: 2024-10-29 16:19
VLAI
EPSS
VEX
Summary
A command injection vulnerability in the Free Time WiFi hotspot feature of the Zyxel USG FLEX series firmware versions 4.50 through 5.36 Patch 2 and VPN series firmware versions 4.20 through 5.36 Patch 2, could allow an unauthenticated, LAN-based attacker to execute some OS commands on an affected device.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-29 16:18 UTC
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.zyxel.com/global/en/support/security-… | vendor-advisory |
Impacted products
4 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Zyxel | USG FLEX series firmware |
Affected:
4.50 through 5.36 Patch 2
|
guessed | |
| Zyxel | VPN series firmware |
Affected:
4.20 through 5.36 Patch 2
|
guessed | |
| zyxel | usg_flex_firmware |
Affected:
4.50 , ≤ 5.36_Patch-2
(custom)
cpe:2.3:o:zyxel:usg_flex_firmware:-:*:*:*:*:*:*:* |
||
| zyxel | vpn_firmware |
Affected:
4.20 , ≤ 5.36_Patch-2
(custom)
cpe:2.3:o:zyxel:vpn_firmware:*:*:*:*:*:*:*:* |
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-02T16:01:54.148Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-wlan-controllers"
}
],
"title": "CVE Program Container"
},
{
"affected": [
{
"cpes": [
"cpe:2.3:o:zyxel:usg_flex_firmware:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "usg_flex_firmware",
"vendor": "zyxel",
"versions": [
{
"lessThanOrEqual": "5.36_Patch-2",
"status": "affected",
"version": "4.50",
"versionType": "custom"
}
]
},
{
"cpes": [
"cpe:2.3:o:zyxel:vpn_firmware:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"product": "vpn_firmware",
"vendor": "zyxel",
"versions": [
{
"lessThanOrEqual": "5.36_Patch-2",
"status": "affected",
"version": "4.20",
"versionType": "custom"
}
]
}
],
"metrics": [
{
"other": {
"content": {
"id": "CVE-2023-34139",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-10-29T16:18:52.786892Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-10-29T16:19:03.216Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "USG FLEX series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.50 through 5.36 Patch 2"
}
]
},
{
"defaultStatus": "unaffected",
"product": "VPN series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.20 through 5.36 Patch 2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "A command injection vulnerability in the Free Time WiFi hotspot feature of the Zyxel USG FLEX series firmware versions 4.50 through 5.36 Patch 2 and VPN series firmware versions 4.20 through 5.36 Patch 2,\u0026nbsp;could allow an unauthenticated, LAN-based attacker to execute some OS commands on an affected device."
}
],
"value": "A command injection vulnerability in the Free Time WiFi hotspot feature of the Zyxel USG FLEX series firmware versions 4.50 through 5.36 Patch 2 and VPN series firmware versions 4.20 through 5.36 Patch 2,\u00a0could allow an unauthenticated, LAN-based attacker to execute some OS commands on an affected device."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-78",
"description": "CWE-78 Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2023-07-18T01:16:42.677Z",
"orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"shortName": "Zyxel"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-wlan-controllers"
}
],
"source": {
"discovery": "UNKNOWN"
},
"x_generator": {
"engine": "Vulnogram 0.1.0-dev"
}
}
},
"cveMetadata": {
"assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"assignerShortName": "Zyxel",
"cveId": "CVE-2023-34139",
"datePublished": "2023-07-17T17:36:32.909Z",
"dateReserved": "2023-05-26T03:44:51.339Z",
"dateUpdated": "2024-10-29T16:19:03.216Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2023-34139",
"date": "2026-09-19",
"epss": "0.00759",
"percentile": "0.53726"
},
"fkie_nvd": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:usg_2200-vpn_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "48A4A637-C466-4F24-AAA6-CE57AF2EF1A4",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.20",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:usg_2200-vpn:-:*:*:*:*:*:*:*",
"matchCriteriaId": "32F7F370-C585-45FE-A7F7-40BFF13928CF",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:usg_flex_100_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "0D66CA5F-C85F-4D69-8F82-BDCF6FCB905C",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.50",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:usg_flex_100:-:*:*:*:*:*:*:*",
"matchCriteriaId": "2B30A4C0-9928-46AD-9210-C25656FB43FB",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:usg_flex_100w_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "E5E31FC3-E2EC-4909-BF8D-86775AF4D4B5",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.50",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:usg_flex_100w:-:*:*:*:*:*:*:*",
"matchCriteriaId": "D74ABA7E-AA78-4A13-A64E-C44021591B42",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:usg_flex_200_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "D6EF9AA9-65D5-4D7B-A2BF-9150C6339282",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.50",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:usg_flex_200:-:*:*:*:*:*:*:*",
"matchCriteriaId": "F93B6A06-2951-46D2-A7E1-103D7318D612",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:usg_flex_50_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "16DE9EA8-98AB-4EAA-AA98-122F64F8D4D2",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.50",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:usg_flex_50:-:*:*:*:*:*:*:*",
"matchCriteriaId": "646C1F07-B553-47B0-953B-DC7DE7FD0F8B",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:usg_flex_500_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "B221F5CD-C0C6-4917-AC15-FF1BA3904915",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.50",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:usg_flex_500:-:*:*:*:*:*:*:*",
"matchCriteriaId": "92C697A5-D1D3-4FF0-9C43-D27B18181958",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:usg_flex_50w_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "338384D8-1585-4AA7-90FB-E56F641E5A14",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.50",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:usg_flex_50w:-:*:*:*:*:*:*:*",
"matchCriteriaId": "110A1CA4-0170-4834-8281-0A3E14FC5584",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:usg_flex_700_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "0FA43EB7-3F72-4250-BE9A-7449B8AEF90F",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.50",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:usg_flex_700:-:*:*:*:*:*:*:*",
"matchCriteriaId": "9D1396E3-731B-4D05-A3F8-F3ABB80D5C29",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:zywall_vpn100_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "241523CE-2712-4840-A672-E87564B40DE1",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.20",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:zywall_vpn100:-:*:*:*:*:*:*:*",
"matchCriteriaId": "6762B13C-6FD5-49D7-B2D6-4986BAC3D425",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:zywall_vpn2s_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "39AE79D4-ABE1-4FAF-9A15-942AF05B6749",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.20",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:zywall_vpn2s:-:*:*:*:*:*:*:*",
"matchCriteriaId": "3D3F001A-8790-463F-804B-CA5CAC610867",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:zywall_vpn300_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "2C429AFE-477E-4243-BAE8-2AB17BB5D9D8",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.20",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:zywall_vpn300:-:*:*:*:*:*:*:*",
"matchCriteriaId": "E7C35A94-304B-46FB-BAA0-4E0C4F34BEDD",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:zywall_vpn50_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "7FC97DF9-7A02-4DA8-AA9F-0D4CE826E224",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.20",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:zywall_vpn50:-:*:*:*:*:*:*:*",
"matchCriteriaId": "D902D9D2-5215-4A70-9D16-F1C3BA10EE18",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:zywall_vpn_100_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "8FD857E4-B5C7-416B-AF9D-9E8A772E227E",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.20",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:zywall_vpn_100:-:*:*:*:*:*:*:*",
"matchCriteriaId": "B1B81DDA-DDD5-4D9B-B631-815186E3839F",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:zywall_vpn_300_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "4894CE6D-BE11-4249-830C-E10141C83D05",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.20",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:zywall_vpn_300:-:*:*:*:*:*:*:*",
"matchCriteriaId": "212C5E8E-774A-446E-B7C7-80C349160BC2",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:zywall_vpn_50_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "B5107841-343E-4776-9F84-90C13BBB736E",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.20",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:zywall_vpn_50:-:*:*:*:*:*:*:*",
"matchCriteriaId": "FD872CA4-385D-49A9-B1DF-7C4467BD49AA",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"descriptions": [
{
"lang": "en",
"value": "A command injection vulnerability in the Free Time WiFi hotspot feature of the Zyxel USG FLEX series firmware versions 4.50 through 5.36 Patch 2 and VPN series firmware versions 4.20 through 5.36 Patch 2,\u00a0could allow an unauthenticated, LAN-based attacker to execute some OS commands on an affected device."
}
],
"id": "CVE-2023-34139",
"lastModified": "2024-11-21T08:06:37.840",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 5.9,
"source": "security@zyxel.com.tw",
"type": "Secondary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2023-07-17T18:15:09.607",
"references": [
{
"source": "security@zyxel.com.tw",
"tags": [
"Vendor Advisory"
],
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-wlan-controllers"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-wlan-controllers"
}
],
"sourceIdentifier": "security@zyxel.com.tw",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-78"
}
],
"source": "security@zyxel.com.tw",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-78"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "USG FLEX series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.50 through 5.36 Patch 2"
}
]
},
{
"defaultStatus": "unaffected",
"product": "VPN series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.20 through 5.36 Patch 2"
}
]
}
],
"source": "security@zyxel.com.tw"
},
{
"affectedData": [
{
"cpes": [
"cpe:2.3:o:zyxel:usg_flex_firmware:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "usg_flex_firmware",
"vendor": "zyxel",
"versions": [
{
"lessThanOrEqual": "5.36_Patch-2",
"status": "affected",
"version": "4.50",
"versionType": "custom"
}
]
},
{
"cpes": [
"cpe:2.3:o:zyxel:vpn_firmware:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"product": "vpn_firmware",
"vendor": "zyxel",
"versions": [
{
"lessThanOrEqual": "5.36_Patch-2",
"status": "affected",
"version": "4.20",
"versionType": "custom"
}
]
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:usg_2200-vpn_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "48A4A637-C466-4F24-AAA6-CE57AF2EF1A4",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.20",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:usg_2200-vpn:-:*:*:*:*:*:*:*",
"matchCriteriaId": "32F7F370-C585-45FE-A7F7-40BFF13928CF",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:usg_flex_100_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "0D66CA5F-C85F-4D69-8F82-BDCF6FCB905C",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.50",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:usg_flex_100:-:*:*:*:*:*:*:*",
"matchCriteriaId": "2B30A4C0-9928-46AD-9210-C25656FB43FB",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:usg_flex_100w_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "E5E31FC3-E2EC-4909-BF8D-86775AF4D4B5",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.50",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:usg_flex_100w:-:*:*:*:*:*:*:*",
"matchCriteriaId": "D74ABA7E-AA78-4A13-A64E-C44021591B42",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:usg_flex_200_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "D6EF9AA9-65D5-4D7B-A2BF-9150C6339282",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.50",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:usg_flex_200:-:*:*:*:*:*:*:*",
"matchCriteriaId": "F93B6A06-2951-46D2-A7E1-103D7318D612",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:usg_flex_50_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "16DE9EA8-98AB-4EAA-AA98-122F64F8D4D2",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.50",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:usg_flex_50:-:*:*:*:*:*:*:*",
"matchCriteriaId": "646C1F07-B553-47B0-953B-DC7DE7FD0F8B",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:usg_flex_500_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "B221F5CD-C0C6-4917-AC15-FF1BA3904915",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.50",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:usg_flex_500:-:*:*:*:*:*:*:*",
"matchCriteriaId": "92C697A5-D1D3-4FF0-9C43-D27B18181958",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:usg_flex_50w_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "338384D8-1585-4AA7-90FB-E56F641E5A14",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.50",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:usg_flex_50w:-:*:*:*:*:*:*:*",
"matchCriteriaId": "110A1CA4-0170-4834-8281-0A3E14FC5584",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:usg_flex_700_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "0FA43EB7-3F72-4250-BE9A-7449B8AEF90F",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.50",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:usg_flex_700:-:*:*:*:*:*:*:*",
"matchCriteriaId": "9D1396E3-731B-4D05-A3F8-F3ABB80D5C29",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:zywall_vpn100_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "241523CE-2712-4840-A672-E87564B40DE1",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.20",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:zywall_vpn100:-:*:*:*:*:*:*:*",
"matchCriteriaId": "6762B13C-6FD5-49D7-B2D6-4986BAC3D425",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:zywall_vpn2s_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "39AE79D4-ABE1-4FAF-9A15-942AF05B6749",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.20",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:zywall_vpn2s:-:*:*:*:*:*:*:*",
"matchCriteriaId": "3D3F001A-8790-463F-804B-CA5CAC610867",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:zywall_vpn300_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "2C429AFE-477E-4243-BAE8-2AB17BB5D9D8",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.20",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:zywall_vpn300:-:*:*:*:*:*:*:*",
"matchCriteriaId": "E7C35A94-304B-46FB-BAA0-4E0C4F34BEDD",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:zywall_vpn50_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "7FC97DF9-7A02-4DA8-AA9F-0D4CE826E224",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.20",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:zywall_vpn50:-:*:*:*:*:*:*:*",
"matchCriteriaId": "D902D9D2-5215-4A70-9D16-F1C3BA10EE18",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:zywall_vpn_100_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "8FD857E4-B5C7-416B-AF9D-9E8A772E227E",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.20",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:zywall_vpn_100:-:*:*:*:*:*:*:*",
"matchCriteriaId": "B1B81DDA-DDD5-4D9B-B631-815186E3839F",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:zywall_vpn_300_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "4894CE6D-BE11-4249-830C-E10141C83D05",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.20",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:zywall_vpn_300:-:*:*:*:*:*:*:*",
"matchCriteriaId": "212C5E8E-774A-446E-B7C7-80C349160BC2",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:zyxel:zywall_vpn_50_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "B5107841-343E-4776-9F84-90C13BBB736E",
"versionEndExcluding": "5.37",
"versionStartIncluding": "4.20",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:zyxel:zywall_vpn_50:-:*:*:*:*:*:*:*",
"matchCriteriaId": "FD872CA4-385D-49A9-B1DF-7C4467BD49AA",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A command injection vulnerability in the Free Time WiFi hotspot feature of the Zyxel USG FLEX series firmware versions 4.50 through 5.36 Patch 2 and VPN series firmware versions 4.20 through 5.36 Patch 2,\u00a0could allow an unauthenticated, LAN-based attacker to execute some OS commands on an affected device."
}
],
"id": "CVE-2023-34139",
"lastModified": "2026-06-17T06:02:58.810",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 5.9,
"source": "security@zyxel.com.tw",
"type": "Secondary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2023-34139",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-10-29T16:18:52.786892Z",
"version": "2.0.3"
}
}
]
},
"published": "2023-07-17T18:15:09.607",
"references": [
{
"source": "security@zyxel.com.tw",
"tags": [
"Vendor Advisory"
],
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-wlan-controllers"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-wlan-controllers"
}
],
"sourceIdentifier": "security@zyxel.com.tw",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-78"
}
],
"source": "security@zyxel.com.tw",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-78"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2025-05-28T23:29:34+00:00",
"cve": "CVE-2023-34139",
"id": "CVE-2023-34139",
"initial_release_date": "2023-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "CVE-2023-34139",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-34139.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-02T16:01:54.148Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-wlan-controllers"
}
],
"title": "CVE Program Container"
},
{
"affected": [
{
"cpes": [
"cpe:2.3:o:zyxel:usg_flex_firmware:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "usg_flex_firmware",
"vendor": "zyxel",
"versions": [
{
"lessThanOrEqual": "5.36_Patch-2",
"status": "affected",
"version": "4.50",
"versionType": "custom"
}
]
},
{
"cpes": [
"cpe:2.3:o:zyxel:vpn_firmware:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"product": "vpn_firmware",
"vendor": "zyxel",
"versions": [
{
"lessThanOrEqual": "5.36_Patch-2",
"status": "affected",
"version": "4.20",
"versionType": "custom"
}
]
}
],
"metrics": [
{
"other": {
"content": {
"id": "CVE-2023-34139",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-10-29T16:18:52.786892Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-10-29T16:18:44.024Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "USG FLEX series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.50 through 5.36 Patch 2"
}
]
},
{
"defaultStatus": "unaffected",
"product": "VPN series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.20 through 5.36 Patch 2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "A command injection vulnerability in the Free Time WiFi hotspot feature of the Zyxel USG FLEX series firmware versions 4.50 through 5.36 Patch 2 and VPN series firmware versions 4.20 through 5.36 Patch 2,\u0026nbsp;could allow an unauthenticated, LAN-based attacker to execute some OS commands on an affected device."
}
],
"value": "A command injection vulnerability in the Free Time WiFi hotspot feature of the Zyxel USG FLEX series firmware versions 4.50 through 5.36 Patch 2 and VPN series firmware versions 4.20 through 5.36 Patch 2,\u00a0could allow an unauthenticated, LAN-based attacker to execute some OS commands on an affected device."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-78",
"description": "CWE-78 Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2023-07-18T01:16:42.677Z",
"orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"shortName": "Zyxel"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-wlan-controllers"
}
],
"source": {
"discovery": "UNKNOWN"
},
"x_generator": {
"engine": "Vulnogram 0.1.0-dev"
}
}
},
"cveMetadata": {
"assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"assignerShortName": "Zyxel",
"cveId": "CVE-2023-34139",
"datePublished": "2023-07-17T17:36:32.909Z",
"dateReserved": "2023-05-26T03:44:51.339Z",
"dateUpdated": "2024-10-29T16:19:03.216Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…