Search
Find a vulnerability
Search criteria
10 vulnerabilities found for ZyWALL/USG series firmware by Zyxel
CVE-2023-33010 (GCVE-0-2023-33010)
Vulnerability from nvd – Published: 2023-05-24 00:00 – Updated: 2025-10-21 23:05Summary
A buffer overflow vulnerability in the ID processing function in Zyxel ATP series firmware versions 4.32 through 5.36 Patch 1, USG FLEX series firmware versions 4.50 through 5.36 Patch 1, USG FLEX 50(W) firmware versions 4.25 through 5.36 Patch 1, USG20(W)-VPN firmware versions 4.25 through 5.36 Patch 1, VPN series firmware versions 4.30 through 5.36 Patch 1, ZyWALL/USG series firmware versions 4.25 through 4.73 Patch 1, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and even a remote code execution on an affected device.
Severity
9.8 (Critical)
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.zyxel.com/global/en/support/security-… | |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| Zyxel | ATP series firmware |
Affected:
4.32 through 5.36 Patch 1
|
|
| Zyxel | USG FLEX series firmware |
Affected:
4.50 through 5.36 Patch 1
|
|
| Zyxel | USG FLEX 50(W) firmware |
Affected:
4.25 through 5.36 Patch 1
|
|
| Zyxel | USG20(W)-VPN firmware |
Affected:
4.25 through 5.36 Patch 1
|
|
| Zyxel | VPN series firmware |
Affected:
4.30 through 5.36 Patch 1
|
|
| Zyxel | ZyWALL/USG series firmware |
Affected:
4.25 through 4.73 Patch 1
|
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-02T15:32:46.559Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-buffer-overflow-vulnerabilities-of-firewalls"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2023-33010",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-01-16T19:00:52.460065Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2023-06-05",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-33010"
},
"type": "kev"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-10-21T23:05:47.497Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"government-resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-33010"
}
],
"timeline": [
{
"lang": "en",
"time": "2023-06-05T00:00:00.000Z",
"value": "CVE-2023-33010 added to CISA KEV"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "ATP series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.32 through 5.36 Patch 1"
}
]
},
{
"product": "USG FLEX series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.50 through 5.36 Patch 1"
}
]
},
{
"product": "USG FLEX 50(W) firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.25 through 5.36 Patch 1"
}
]
},
{
"product": "USG20(W)-VPN firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.25 through 5.36 Patch 1"
}
]
},
{
"product": "VPN series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.30 through 5.36 Patch 1"
}
]
},
{
"product": "ZyWALL/USG series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.25 through 4.73 Patch 1"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A buffer overflow vulnerability in the ID processing function in Zyxel ATP series firmware versions 4.32 through 5.36 Patch 1, USG FLEX series firmware versions 4.50 through 5.36 Patch 1, USG FLEX 50(W) firmware versions 4.25 through 5.36 Patch 1, USG20(W)-VPN firmware versions 4.25 through 5.36 Patch 1, VPN series firmware versions 4.30 through 5.36 Patch 1, ZyWALL/USG series firmware versions 4.25 through 4.73 Patch 1, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and even a remote code execution on an affected device."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-120",
"description": "CWE-120: Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2023-05-24T00:00:00.000Z",
"orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"shortName": "Zyxel"
},
"references": [
{
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-buffer-overflow-vulnerabilities-of-firewalls"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"assignerShortName": "Zyxel",
"cveId": "CVE-2023-33010",
"datePublished": "2023-05-24T00:00:00.000Z",
"dateReserved": "2023-05-17T00:00:00.000Z",
"dateUpdated": "2025-10-21T23:05:47.497Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
CVE-2023-33009 (GCVE-0-2023-33009)
Vulnerability from nvd – Published: 2023-05-24 00:00 – Updated: 2025-10-21 23:05Summary
A buffer overflow vulnerability in the notification function in Zyxel ATP series firmware versions 4.60 through 5.36 Patch 1, USG FLEX series firmware versions 4.60 through 5.36 Patch 1, USG FLEX 50(W) firmware versions 4.60 through 5.36 Patch 1, USG20(W)-VPN firmware versions 4.60 through 5.36 Patch 1, VPN series firmware versions 4.60 through 5.36 Patch 1, ZyWALL/USG series firmware versions 4.60 through 4.73 Patch 1, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and even a remote code execution on an affected device.
Severity
9.8 (Critical)
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.zyxel.com/global/en/support/security-… | |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| Zyxel | ATP series firmware |
Affected:
4.60 through 5.36 Patch 1
|
|
| Zyxel | USG FLEX series firmware |
Affected:
4.60 through 5.36 Patch 1
|
|
| Zyxel | USG FLEX 50(W) firmware |
Affected:
4.60 through 5.36 Patch 1
|
|
| Zyxel | USG20(W)-VPN firmware |
Affected:
4.60 through 5.36 Patch 1
|
|
| Zyxel | VPN series firmware |
Affected:
4.60 through 5.36 Patch 1
|
|
| Zyxel | ZyWALL/USG series firmware |
Affected:
4.60 through 4.73 Patch 1
|
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-02T15:32:46.565Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-buffer-overflow-vulnerabilities-of-firewalls"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2023-33009",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-02-04T16:14:56.233928Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2023-06-05",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-33009"
},
"type": "kev"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-10-21T23:05:47.636Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"government-resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-33009"
}
],
"timeline": [
{
"lang": "en",
"time": "2023-06-05T00:00:00.000Z",
"value": "CVE-2023-33009 added to CISA KEV"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "ATP series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.60 through 5.36 Patch 1"
}
]
},
{
"defaultStatus": "unaffected",
"product": "USG FLEX series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.60 through 5.36 Patch 1"
}
]
},
{
"defaultStatus": "unaffected",
"product": "USG FLEX 50(W) firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.60 through 5.36 Patch 1"
}
]
},
{
"defaultStatus": "unaffected",
"product": "USG20(W)-VPN firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.60 through 5.36 Patch 1"
}
]
},
{
"defaultStatus": "unaffected",
"product": "VPN series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.60 through 5.36 Patch 1"
}
]
},
{
"defaultStatus": "unaffected",
"product": "ZyWALL/USG series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.60 through 4.73 Patch 1"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eA buffer overflow vulnerability in the notification function in Zyxel ATP series firmware versions 4.60 through 5.36 Patch 1, USG FLEX series firmware versions 4.60 through 5.36 Patch 1, USG FLEX 50(W) firmware versions 4.60 through 5.36 Patch 1, USG20(W)-VPN firmware versions 4.60 through 5.36 Patch 1, VPN series firmware versions 4.60 through 5.36 Patch 1, ZyWALL/USG series firmware versions 4.60 through 4.73 Patch 1, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and even a remote code execution on an affected device.\u003c/p\u003e"
}
],
"value": "A buffer overflow vulnerability in the notification function in Zyxel ATP series firmware versions 4.60 through 5.36 Patch 1, USG FLEX series firmware versions 4.60 through 5.36 Patch 1, USG FLEX 50(W) firmware versions 4.60 through 5.36 Patch 1, USG20(W)-VPN firmware versions 4.60 through 5.36 Patch 1, VPN series firmware versions 4.60 through 5.36 Patch 1, ZyWALL/USG series firmware versions 4.60 through 4.73 Patch 1, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and even a remote code execution on an affected device."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/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-120",
"description": "CWE-120: Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2023-06-15T06:17:00.675Z",
"orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"shortName": "Zyxel"
},
"references": [
{
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-buffer-overflow-vulnerabilities-of-firewalls"
}
],
"source": {
"discovery": "UNKNOWN"
},
"x_generator": {
"engine": "Vulnogram 0.1.0-dev"
}
}
},
"cveMetadata": {
"assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"assignerShortName": "Zyxel",
"cveId": "CVE-2023-33009",
"datePublished": "2023-05-24T00:00:00.000Z",
"dateReserved": "2023-05-17T00:00:00.000Z",
"dateUpdated": "2025-10-21T23:05:47.636Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
CVE-2023-28771 (GCVE-0-2023-28771)
Vulnerability from nvd – Published: 2023-04-25 00:00 – Updated: 2025-10-21 23:05Summary
Improper error message handling in Zyxel ZyWALL/USG series firmware versions 4.60 through 4.73, VPN series firmware versions 4.60 through 5.35, USG FLEX series firmware versions 4.60 through 5.35, and ATP series firmware versions 4.60 through 5.35, which could allow an unauthenticated attacker to execute some OS commands remotely by sending crafted packets to an affected device.
Severity
9.8 (Critical)
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
3 references
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Zyxel | ZyWALL/USG series firmware |
Affected:
4.60 through 4.73
|
|
| Zyxel | VPN series firmware |
Affected:
4.60 through 5.35
|
|
| Zyxel | USG FLEX series firmware |
Affected:
4.60 through 5.35
|
|
| Zyxel | ATP series firmware |
Affected:
4.60 through 5.35
|
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-02T13:51:38.311Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-remote-command-injection-vulnerability-of-firewalls"
},
{
"tags": [
"x_transferred"
],
"url": "http://packetstormsecurity.com/files/172820/Zyxel-IKE-Packet-Decoder-Unauthenticated-Remote-Code-Execution.html"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2023-28771",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2023-11-18T05:00:32.985076Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2023-05-31",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-28771"
},
"type": "kev"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-10-21T23:05:48.400Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"government-resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-28771"
}
],
"timeline": [
{
"lang": "en",
"time": "2023-05-31T00:00:00.000Z",
"value": "CVE-2023-28771 added to CISA KEV"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "ZyWALL/USG series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.60 through 4.73"
}
]
},
{
"product": "VPN series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.60 through 5.35"
}
]
},
{
"product": "USG FLEX series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.60 through 5.35"
}
]
},
{
"product": "ATP series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.60 through 5.35"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Improper error message handling in Zyxel ZyWALL/USG series firmware versions 4.60 through 4.73, VPN series firmware versions 4.60 through 5.35, USG FLEX series firmware versions 4.60 through 5.35, and ATP series firmware versions 4.60 through 5.35, which could allow an unauthenticated attacker to execute some OS commands remotely by sending crafted packets to an affected device."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
}
],
"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": "2023-06-09T00:00:00.000Z",
"orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"shortName": "Zyxel"
},
"references": [
{
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-remote-command-injection-vulnerability-of-firewalls"
},
{
"url": "http://packetstormsecurity.com/files/172820/Zyxel-IKE-Packet-Decoder-Unauthenticated-Remote-Code-Execution.html"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"assignerShortName": "Zyxel",
"cveId": "CVE-2023-28771",
"datePublished": "2023-04-25T00:00:00.000Z",
"dateReserved": "2023-03-23T00:00:00.000Z",
"dateUpdated": "2025-10-21T23:05:48.400Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
CVE-2022-38547 (GCVE-0-2022-38547)
Vulnerability from nvd – Published: 2023-02-07 00:00 – Updated: 2025-03-25 15:39
VLAI
EPSS
VEX
Summary
A post-authentication command injection vulnerability in the CLI command of Zyxel ZyWALL/USG series firmware versions 4.20 through 4.72, VPN series firmware versions 4.30 through 5.32, USG FLEX series firmware versions 4.50 through 5.32, and ATP series firmware versions 4.32 through 5.32, which could allow an authenticated attacker with administrator privileges to execute OS commands.
Severity
7.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
1 reference
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Zyxel | ZyWALL/USG series firmware |
Affected:
4.20 through 4.72
|
|
| Zyxel | VPN series firmware |
Affected:
4.30 through 5.32
|
|
| Zyxel | USG FLEX series firmware |
Affected:
4.50 through 5.32
|
|
| Zyxel | ATP series firmware |
Affected:
4.32 through 5.32
|
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T10:54:04.001Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-rce-in-firewalls"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2022-38547",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-03-25T15:39:35.477790Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-03-25T15:39:42.181Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "ZyWALL/USG series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.20 through 4.72"
}
]
},
{
"product": "VPN series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.30 through 5.32"
}
]
},
{
"product": "USG FLEX series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.50 through 5.32"
}
]
},
{
"product": "ATP series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.32 through 5.32"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A post-authentication command injection vulnerability in the CLI command of Zyxel ZyWALL/USG series firmware versions 4.20 through 4.72, VPN series firmware versions 4.30 through 5.32, USG FLEX series firmware versions 4.50 through 5.32, and ATP series firmware versions 4.32 through 5.32, which could allow an authenticated attacker with administrator privileges to execute OS commands."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
}
],
"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": "2023-02-07T00:00:00.000Z",
"orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"shortName": "Zyxel"
},
"references": [
{
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-rce-in-firewalls"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"assignerShortName": "Zyxel",
"cveId": "CVE-2022-38547",
"datePublished": "2023-02-07T00:00:00.000Z",
"dateReserved": "2022-08-22T00:00:00.000Z",
"dateUpdated": "2025-03-25T15:39:42.181Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
CVE-2022-40603 (GCVE-0-2022-40603)
Vulnerability from nvd – Published: 2022-12-06 00:00 – Updated: 2025-04-23 20:00
VLAI
EPSS
VEX
Summary
A cross-site scripting (XSS) vulnerability in the CGI program of Zyxel ZyWALL/USG series firmware versions 4.30 through 4.72, VPN series firmware versions 4.30 through 5.31, USG FLEX series firmware versions 4.50 through 5.31, and ATP series firmware versions 4.32 through 5.31, which could allow an attacker to trick a user into visiting a crafted URL with the XSS payload. Then, the attacker could gain access to some browser-based information if the malicious script is executed on the victim’s browser.
Severity
4.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Zyxel | ZyWALL/USG series firmware |
Affected:
4.30 through 4.72
|
|
| Zyxel | VPN series firmware |
Affected:
4.30 through 5.31
|
|
| Zyxel | USG FLEX series firmware |
Affected:
4.50 through 5.31
|
|
| Zyxel | ATP series firmware |
Affected:
4.32 through 5.31
|
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T12:21:46.447Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-xss-vulnerability-in-firewalls"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2022-40603",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-04-23T20:00:17.861955Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-04-23T20:00:23.891Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "ZyWALL/USG series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.30 through 4.72"
}
]
},
{
"product": "VPN series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.30 through 5.31"
}
]
},
{
"product": "USG FLEX series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.50 through 5.31"
}
]
},
{
"product": "ATP series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.32 through 5.31"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A cross-site scripting (XSS) vulnerability in the CGI program of Zyxel ZyWALL/USG series firmware versions 4.30 through 4.72, VPN series firmware versions 4.30 through 5.31, USG FLEX series firmware versions 4.50 through 5.31, and ATP series firmware versions 4.32 through 5.31, which could allow an attacker to trick a user into visiting a crafted URL with the XSS payload. Then, the attacker could gain access to some browser-based information if the malicious script is executed on the victim\u2019s browser."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 4.7,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2022-12-06T00:00:00.000Z",
"orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"shortName": "Zyxel"
},
"references": [
{
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-xss-vulnerability-in-firewalls"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"assignerShortName": "Zyxel",
"cveId": "CVE-2022-40603",
"datePublished": "2022-12-06T00:00:00.000Z",
"dateReserved": "2022-09-12T00:00:00.000Z",
"dateUpdated": "2025-04-23T20:00:23.891Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
CVE-2023-33009 (GCVE-0-2023-33009)
Vulnerability from cvelistv5 – Published: 2023-05-24 00:00 – Updated: 2025-10-21 23:05Summary
A buffer overflow vulnerability in the notification function in Zyxel ATP series firmware versions 4.60 through 5.36 Patch 1, USG FLEX series firmware versions 4.60 through 5.36 Patch 1, USG FLEX 50(W) firmware versions 4.60 through 5.36 Patch 1, USG20(W)-VPN firmware versions 4.60 through 5.36 Patch 1, VPN series firmware versions 4.60 through 5.36 Patch 1, ZyWALL/USG series firmware versions 4.60 through 4.73 Patch 1, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and even a remote code execution on an affected device.
Severity
9.8 (Critical)
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.zyxel.com/global/en/support/security-… | |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| Zyxel | ATP series firmware |
Affected:
4.60 through 5.36 Patch 1
|
|
| Zyxel | USG FLEX series firmware |
Affected:
4.60 through 5.36 Patch 1
|
|
| Zyxel | USG FLEX 50(W) firmware |
Affected:
4.60 through 5.36 Patch 1
|
|
| Zyxel | USG20(W)-VPN firmware |
Affected:
4.60 through 5.36 Patch 1
|
|
| Zyxel | VPN series firmware |
Affected:
4.60 through 5.36 Patch 1
|
|
| Zyxel | ZyWALL/USG series firmware |
Affected:
4.60 through 4.73 Patch 1
|
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-02T15:32:46.565Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-buffer-overflow-vulnerabilities-of-firewalls"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2023-33009",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-02-04T16:14:56.233928Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2023-06-05",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-33009"
},
"type": "kev"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-10-21T23:05:47.636Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"government-resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-33009"
}
],
"timeline": [
{
"lang": "en",
"time": "2023-06-05T00:00:00.000Z",
"value": "CVE-2023-33009 added to CISA KEV"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "ATP series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.60 through 5.36 Patch 1"
}
]
},
{
"defaultStatus": "unaffected",
"product": "USG FLEX series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.60 through 5.36 Patch 1"
}
]
},
{
"defaultStatus": "unaffected",
"product": "USG FLEX 50(W) firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.60 through 5.36 Patch 1"
}
]
},
{
"defaultStatus": "unaffected",
"product": "USG20(W)-VPN firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.60 through 5.36 Patch 1"
}
]
},
{
"defaultStatus": "unaffected",
"product": "VPN series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.60 through 5.36 Patch 1"
}
]
},
{
"defaultStatus": "unaffected",
"product": "ZyWALL/USG series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.60 through 4.73 Patch 1"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eA buffer overflow vulnerability in the notification function in Zyxel ATP series firmware versions 4.60 through 5.36 Patch 1, USG FLEX series firmware versions 4.60 through 5.36 Patch 1, USG FLEX 50(W) firmware versions 4.60 through 5.36 Patch 1, USG20(W)-VPN firmware versions 4.60 through 5.36 Patch 1, VPN series firmware versions 4.60 through 5.36 Patch 1, ZyWALL/USG series firmware versions 4.60 through 4.73 Patch 1, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and even a remote code execution on an affected device.\u003c/p\u003e"
}
],
"value": "A buffer overflow vulnerability in the notification function in Zyxel ATP series firmware versions 4.60 through 5.36 Patch 1, USG FLEX series firmware versions 4.60 through 5.36 Patch 1, USG FLEX 50(W) firmware versions 4.60 through 5.36 Patch 1, USG20(W)-VPN firmware versions 4.60 through 5.36 Patch 1, VPN series firmware versions 4.60 through 5.36 Patch 1, ZyWALL/USG series firmware versions 4.60 through 4.73 Patch 1, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and even a remote code execution on an affected device."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/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-120",
"description": "CWE-120: Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2023-06-15T06:17:00.675Z",
"orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"shortName": "Zyxel"
},
"references": [
{
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-buffer-overflow-vulnerabilities-of-firewalls"
}
],
"source": {
"discovery": "UNKNOWN"
},
"x_generator": {
"engine": "Vulnogram 0.1.0-dev"
}
}
},
"cveMetadata": {
"assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"assignerShortName": "Zyxel",
"cveId": "CVE-2023-33009",
"datePublished": "2023-05-24T00:00:00.000Z",
"dateReserved": "2023-05-17T00:00:00.000Z",
"dateUpdated": "2025-10-21T23:05:47.636Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
CVE-2023-33010 (GCVE-0-2023-33010)
Vulnerability from cvelistv5 – Published: 2023-05-24 00:00 – Updated: 2025-10-21 23:05Summary
A buffer overflow vulnerability in the ID processing function in Zyxel ATP series firmware versions 4.32 through 5.36 Patch 1, USG FLEX series firmware versions 4.50 through 5.36 Patch 1, USG FLEX 50(W) firmware versions 4.25 through 5.36 Patch 1, USG20(W)-VPN firmware versions 4.25 through 5.36 Patch 1, VPN series firmware versions 4.30 through 5.36 Patch 1, ZyWALL/USG series firmware versions 4.25 through 4.73 Patch 1, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and even a remote code execution on an affected device.
Severity
9.8 (Critical)
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.zyxel.com/global/en/support/security-… | |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| Zyxel | ATP series firmware |
Affected:
4.32 through 5.36 Patch 1
|
|
| Zyxel | USG FLEX series firmware |
Affected:
4.50 through 5.36 Patch 1
|
|
| Zyxel | USG FLEX 50(W) firmware |
Affected:
4.25 through 5.36 Patch 1
|
|
| Zyxel | USG20(W)-VPN firmware |
Affected:
4.25 through 5.36 Patch 1
|
|
| Zyxel | VPN series firmware |
Affected:
4.30 through 5.36 Patch 1
|
|
| Zyxel | ZyWALL/USG series firmware |
Affected:
4.25 through 4.73 Patch 1
|
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-02T15:32:46.559Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-buffer-overflow-vulnerabilities-of-firewalls"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2023-33010",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-01-16T19:00:52.460065Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2023-06-05",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-33010"
},
"type": "kev"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-10-21T23:05:47.497Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"government-resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-33010"
}
],
"timeline": [
{
"lang": "en",
"time": "2023-06-05T00:00:00.000Z",
"value": "CVE-2023-33010 added to CISA KEV"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "ATP series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.32 through 5.36 Patch 1"
}
]
},
{
"product": "USG FLEX series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.50 through 5.36 Patch 1"
}
]
},
{
"product": "USG FLEX 50(W) firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.25 through 5.36 Patch 1"
}
]
},
{
"product": "USG20(W)-VPN firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.25 through 5.36 Patch 1"
}
]
},
{
"product": "VPN series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.30 through 5.36 Patch 1"
}
]
},
{
"product": "ZyWALL/USG series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.25 through 4.73 Patch 1"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A buffer overflow vulnerability in the ID processing function in Zyxel ATP series firmware versions 4.32 through 5.36 Patch 1, USG FLEX series firmware versions 4.50 through 5.36 Patch 1, USG FLEX 50(W) firmware versions 4.25 through 5.36 Patch 1, USG20(W)-VPN firmware versions 4.25 through 5.36 Patch 1, VPN series firmware versions 4.30 through 5.36 Patch 1, ZyWALL/USG series firmware versions 4.25 through 4.73 Patch 1, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and even a remote code execution on an affected device."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-120",
"description": "CWE-120: Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2023-05-24T00:00:00.000Z",
"orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"shortName": "Zyxel"
},
"references": [
{
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-buffer-overflow-vulnerabilities-of-firewalls"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"assignerShortName": "Zyxel",
"cveId": "CVE-2023-33010",
"datePublished": "2023-05-24T00:00:00.000Z",
"dateReserved": "2023-05-17T00:00:00.000Z",
"dateUpdated": "2025-10-21T23:05:47.497Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
CVE-2023-28771 (GCVE-0-2023-28771)
Vulnerability from cvelistv5 – Published: 2023-04-25 00:00 – Updated: 2025-10-21 23:05Summary
Improper error message handling in Zyxel ZyWALL/USG series firmware versions 4.60 through 4.73, VPN series firmware versions 4.60 through 5.35, USG FLEX series firmware versions 4.60 through 5.35, and ATP series firmware versions 4.60 through 5.35, which could allow an unauthenticated attacker to execute some OS commands remotely by sending crafted packets to an affected device.
Severity
9.8 (Critical)
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
3 references
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Zyxel | ZyWALL/USG series firmware |
Affected:
4.60 through 4.73
|
|
| Zyxel | VPN series firmware |
Affected:
4.60 through 5.35
|
|
| Zyxel | USG FLEX series firmware |
Affected:
4.60 through 5.35
|
|
| Zyxel | ATP series firmware |
Affected:
4.60 through 5.35
|
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-02T13:51:38.311Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-remote-command-injection-vulnerability-of-firewalls"
},
{
"tags": [
"x_transferred"
],
"url": "http://packetstormsecurity.com/files/172820/Zyxel-IKE-Packet-Decoder-Unauthenticated-Remote-Code-Execution.html"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2023-28771",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2023-11-18T05:00:32.985076Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2023-05-31",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-28771"
},
"type": "kev"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-10-21T23:05:48.400Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"government-resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-28771"
}
],
"timeline": [
{
"lang": "en",
"time": "2023-05-31T00:00:00.000Z",
"value": "CVE-2023-28771 added to CISA KEV"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "ZyWALL/USG series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.60 through 4.73"
}
]
},
{
"product": "VPN series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.60 through 5.35"
}
]
},
{
"product": "USG FLEX series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.60 through 5.35"
}
]
},
{
"product": "ATP series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.60 through 5.35"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Improper error message handling in Zyxel ZyWALL/USG series firmware versions 4.60 through 4.73, VPN series firmware versions 4.60 through 5.35, USG FLEX series firmware versions 4.60 through 5.35, and ATP series firmware versions 4.60 through 5.35, which could allow an unauthenticated attacker to execute some OS commands remotely by sending crafted packets to an affected device."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
}
],
"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": "2023-06-09T00:00:00.000Z",
"orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"shortName": "Zyxel"
},
"references": [
{
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-remote-command-injection-vulnerability-of-firewalls"
},
{
"url": "http://packetstormsecurity.com/files/172820/Zyxel-IKE-Packet-Decoder-Unauthenticated-Remote-Code-Execution.html"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"assignerShortName": "Zyxel",
"cveId": "CVE-2023-28771",
"datePublished": "2023-04-25T00:00:00.000Z",
"dateReserved": "2023-03-23T00:00:00.000Z",
"dateUpdated": "2025-10-21T23:05:48.400Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
CVE-2022-38547 (GCVE-0-2022-38547)
Vulnerability from cvelistv5 – Published: 2023-02-07 00:00 – Updated: 2025-03-25 15:39
VLAI
EPSS
VEX
Summary
A post-authentication command injection vulnerability in the CLI command of Zyxel ZyWALL/USG series firmware versions 4.20 through 4.72, VPN series firmware versions 4.30 through 5.32, USG FLEX series firmware versions 4.50 through 5.32, and ATP series firmware versions 4.32 through 5.32, which could allow an authenticated attacker with administrator privileges to execute OS commands.
Severity
7.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
1 reference
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Zyxel | ZyWALL/USG series firmware |
Affected:
4.20 through 4.72
|
|
| Zyxel | VPN series firmware |
Affected:
4.30 through 5.32
|
|
| Zyxel | USG FLEX series firmware |
Affected:
4.50 through 5.32
|
|
| Zyxel | ATP series firmware |
Affected:
4.32 through 5.32
|
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T10:54:04.001Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-rce-in-firewalls"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2022-38547",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-03-25T15:39:35.477790Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-03-25T15:39:42.181Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "ZyWALL/USG series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.20 through 4.72"
}
]
},
{
"product": "VPN series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.30 through 5.32"
}
]
},
{
"product": "USG FLEX series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.50 through 5.32"
}
]
},
{
"product": "ATP series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.32 through 5.32"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A post-authentication command injection vulnerability in the CLI command of Zyxel ZyWALL/USG series firmware versions 4.20 through 4.72, VPN series firmware versions 4.30 through 5.32, USG FLEX series firmware versions 4.50 through 5.32, and ATP series firmware versions 4.32 through 5.32, which could allow an authenticated attacker with administrator privileges to execute OS commands."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
}
],
"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": "2023-02-07T00:00:00.000Z",
"orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"shortName": "Zyxel"
},
"references": [
{
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-rce-in-firewalls"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"assignerShortName": "Zyxel",
"cveId": "CVE-2022-38547",
"datePublished": "2023-02-07T00:00:00.000Z",
"dateReserved": "2022-08-22T00:00:00.000Z",
"dateUpdated": "2025-03-25T15:39:42.181Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
CVE-2022-40603 (GCVE-0-2022-40603)
Vulnerability from cvelistv5 – Published: 2022-12-06 00:00 – Updated: 2025-04-23 20:00
VLAI
EPSS
VEX
Summary
A cross-site scripting (XSS) vulnerability in the CGI program of Zyxel ZyWALL/USG series firmware versions 4.30 through 4.72, VPN series firmware versions 4.30 through 5.31, USG FLEX series firmware versions 4.50 through 5.31, and ATP series firmware versions 4.32 through 5.31, which could allow an attacker to trick a user into visiting a crafted URL with the XSS payload. Then, the attacker could gain access to some browser-based information if the malicious script is executed on the victim’s browser.
Severity
4.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Zyxel | ZyWALL/USG series firmware |
Affected:
4.30 through 4.72
|
|
| Zyxel | VPN series firmware |
Affected:
4.30 through 5.31
|
|
| Zyxel | USG FLEX series firmware |
Affected:
4.50 through 5.31
|
|
| Zyxel | ATP series firmware |
Affected:
4.32 through 5.31
|
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T12:21:46.447Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-xss-vulnerability-in-firewalls"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2022-40603",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-04-23T20:00:17.861955Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-04-23T20:00:23.891Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "ZyWALL/USG series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.30 through 4.72"
}
]
},
{
"product": "VPN series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.30 through 5.31"
}
]
},
{
"product": "USG FLEX series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.50 through 5.31"
}
]
},
{
"product": "ATP series firmware",
"vendor": "Zyxel",
"versions": [
{
"status": "affected",
"version": "4.32 through 5.31"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A cross-site scripting (XSS) vulnerability in the CGI program of Zyxel ZyWALL/USG series firmware versions 4.30 through 4.72, VPN series firmware versions 4.30 through 5.31, USG FLEX series firmware versions 4.50 through 5.31, and ATP series firmware versions 4.32 through 5.31, which could allow an attacker to trick a user into visiting a crafted URL with the XSS payload. Then, the attacker could gain access to some browser-based information if the malicious script is executed on the victim\u2019s browser."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 4.7,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2022-12-06T00:00:00.000Z",
"orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"shortName": "Zyxel"
},
"references": [
{
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-xss-vulnerability-in-firewalls"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"assignerShortName": "Zyxel",
"cveId": "CVE-2022-40603",
"datePublished": "2022-12-06T00:00:00.000Z",
"dateReserved": "2022-09-12T00:00:00.000Z",
"dateUpdated": "2025-04-23T20:00:23.891Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}