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10 vulnerabilities found for ZyWALL/USG series firmware by Zyxel
CVE-2023-33010 (GCVE-0-2023-33010)
Vulnerability from cvelistv5 – Published: 2023-05-24 00:00 – Updated: 2025-10-21 23:05
VLAI?
Summary
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)
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Zyxel | ATP series firmware |
Affected:
4.32 through 5.36 Patch 1
|
|||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||
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CVE-2023-33009 (GCVE-0-2023-33009)
Vulnerability from cvelistv5 – Published: 2023-05-24 00:00 – Updated: 2025-10-21 23:05
VLAI?
Summary
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)
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Zyxel | ATP series firmware |
Affected:
4.60 through 5.36 Patch 1
|
|||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||
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CVE-2023-28771 (GCVE-0-2023-28771)
Vulnerability from cvelistv5 – Published: 2023-04-25 00:00 – Updated: 2025-10-21 23:05
VLAI?
Summary
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)
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Zyxel | ZyWALL/USG series firmware |
Affected:
4.60 through 4.73
|
|||||||||||||||||
|
|||||||||||||||||||
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CVE-2022-38547 (GCVE-0-2022-38547)
Vulnerability from cvelistv5 – Published: 2023-02-07 00:00 – Updated: 2025-03-25 15:39
VLAI?
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)
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Zyxel | ZyWALL/USG series firmware |
Affected:
4.20 through 4.72
|
|||||||||||||||||
|
|||||||||||||||||||
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CVE-2022-40603 (GCVE-0-2022-40603)
Vulnerability from cvelistv5 – Published: 2022-12-06 00:00 – Updated: 2025-04-23 20:00
VLAI?
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)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Zyxel | ZyWALL/USG series firmware |
Affected:
4.30 through 4.72
|
|||||||||||||||||
|
|||||||||||||||||||
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CVE-2023-33010 (GCVE-0-2023-33010)
Vulnerability from nvd – Published: 2023-05-24 00:00 – Updated: 2025-10-21 23:05
VLAI?
Summary
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)
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Zyxel | ATP series firmware |
Affected:
4.32 through 5.36 Patch 1
|
|||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||
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CVE-2023-33009 (GCVE-0-2023-33009)
Vulnerability from nvd – Published: 2023-05-24 00:00 – Updated: 2025-10-21 23:05
VLAI?
Summary
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)
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Zyxel | ATP series firmware |
Affected:
4.60 through 5.36 Patch 1
|
|||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||
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CVE-2023-28771 (GCVE-0-2023-28771)
Vulnerability from nvd – Published: 2023-04-25 00:00 – Updated: 2025-10-21 23:05
VLAI?
Summary
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)
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Zyxel | ZyWALL/USG series firmware |
Affected:
4.60 through 4.73
|
|||||||||||||||||
|
|||||||||||||||||||
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CVE-2022-38547 (GCVE-0-2022-38547)
Vulnerability from nvd – Published: 2023-02-07 00:00 – Updated: 2025-03-25 15:39
VLAI?
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)
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Zyxel | ZyWALL/USG series firmware |
Affected:
4.20 through 4.72
|
|||||||||||||||||
|
|||||||||||||||||||
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CVE-2022-40603 (GCVE-0-2022-40603)
Vulnerability from nvd – Published: 2022-12-06 00:00 – Updated: 2025-04-23 20:00
VLAI?
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)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Zyxel | ZyWALL/USG series firmware |
Affected:
4.30 through 4.72
|
|||||||||||||||||
|
|||||||||||||||||||
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