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12 vulnerabilities found for usg1100_firmware by zyxel
CVE-2021-35029 (GCVE-0-2021-35029)
Vulnerability from nvd – Published: 2021-07-02 10:29 – Updated: 2024-08-04 00:33
VLAI
EPSS
VEX
Summary
An authentication bypasss vulnerability in the web-based management interface of Zyxel USG/Zywall series firmware versions 4.35 through 4.64 and USG Flex, ATP, and VPN series firmware versions 4.35 through 5.01, which could allow a remote attacker to execute arbitrary commands on an affected device.
Severity
9.8 (Critical)
CWE
- CWE-287 - Improper Authentication
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.zyxel.com/support/Zyxel_security_advi… | x_refsource_MISC |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Zyxel | USG/Zywall series Firmware |
Affected:
4.35 through 4.64
|
|
| Zyxel | USG FLEX series Firmware |
Affected:
4.35 through 5.01
|
|
| Zyxel | ATP series Firmware |
Affected:
4.35 through 5.01
|
|
| Zyxel | VPN series Firmware |
Affected:
4.35 through 5.01
|
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CVE-2020-29583 (GCVE-0-2020-29583)
Vulnerability from nvd – Published: 2020-12-22 00:00 – Updated: 2025-10-21 23:35Summary
Firmware version 4.60 of Zyxel USG devices contains an undocumented account (zyfwp) with an unchangeable password. The password for this account can be found in cleartext in the firmware. This account can be used by someone to login to the ssh server or web interface with admin privileges.
Severity
9.8 (Critical)
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-522 - Insufficiently Protected Credentials
Assigner
References
8 references
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CVE-2020-9054 (GCVE-0-2020-9054)
Vulnerability from nvd – Published: 2020-03-04 19:30 – Updated: 2025-10-21 23:35Title
ZyXEL NAS products running firmware version 5.21 and earlier are vulnerable to pre-authentication command injection in weblogin.cgi
Summary
Multiple ZyXEL network-attached storage (NAS) devices running firmware version 5.21 contain a pre-authentication command injection vulnerability, which may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable device. ZyXEL NAS devices achieve authentication by using the weblogin.cgi CGI executable. This program fails to properly sanitize the username parameter that is passed to it. If the username parameter contains certain characters, it can allow command injection with the privileges of the web server that runs on the ZyXEL device. Although the web server does not run as the root user, ZyXEL devices include a setuid utility that can be leveraged to run any command with root privileges. As such, it should be assumed that exploitation of this vulnerability can lead to remote code execution with root privileges. By sending a specially-crafted HTTP POST or GET request to a vulnerable ZyXEL device, a remote, unauthenticated attacker may be able to execute arbitrary code on the device. This may happen by directly connecting to a device if it is directly exposed to an attacker. However, there are ways to trigger such crafted requests even if an attacker does not have direct connectivity to a vulnerable devices. For example, simply visiting a website can result in the compromise of any ZyXEL device that is reachable from the client system. Affected products include: NAS326 before firmware V5.21(AAZF.7)C0 NAS520 before firmware V5.21(AASZ.3)C0 NAS540 before firmware V5.21(AATB.4)C0 NAS542 before firmware V5.21(ABAG.4)C0 ZyXEL has made firmware updates available for NAS326, NAS520, NAS540, and NAS542 devices. Affected models that are end-of-support: NSA210, NSA220, NSA220+, NSA221, NSA310, NSA310S, NSA320, NSA320S, NSA325 and NSA325v2
Severity
9.8 (Critical)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://cwe.mitre.org/data/definitions/78.html | x_refsource_MISC |
| https://www.zyxel.com/support/remote-code-executi… | x_refsource_CONFIRM |
| https://kb.cert.org/vuls/id/498544/ | third-party-advisoryx_refsource_CERT-VN |
| https://kb.cert.org/artifacts/cve-2020-9054.html | x_refsource_MISC |
| https://krebsonsecurity.com/2020/02/zyxel-fixes-0… | x_refsource_MISC |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
13 products
| Vendor | Product | Version | |
|---|---|---|---|
| ZyXEL | NAS326 |
Affected:
V5.21(AAZF.7)C0 , ≤ V5.21(AAZF.7)C0
(custom)
|
|
| ZyXEL | NAS520 |
Affected:
V5.21(AASZ.3)C0 , ≤ V5.21(AASZ.3)C0
(custom)
|
|
| ZyXEL | NAS540 |
Affected:
V5.21(AATB.4)C0 , ≤ V5.21(AATB.4)C0
(custom)
|
|
| ZyXEL | NAS542 |
Affected:
V5.21(ABAG.4)C0 , ≤ V5.21(ABAG.4)C0
(custom)
|
|
| ZyXEL | NSA210 |
Affected:
all
|
|
| ZyXEL | NSA220 |
Affected:
all
|
|
| ZyXEL | NSA220+ |
Affected:
all
|
|
| ZyXEL | NSA221 |
Affected:
all
|
|
| ZyXEL | NSA310 |
Affected:
V4.75(AALH.2)C0 , ≤ V4.75(AALH.2)C0
(custom)
|
|
| ZyXEL | NSA320 |
Affected:
all
|
|
| ZyXEL | NSA320S |
Affected:
V4.75(AANV.2)C0 , ≤ V4.75(AANV.2)C0
(custom)
|
|
| ZyXEL | NSA325 |
Affected:
V4.81(AAAJ.1)C0 , ≤ V4.81(AAAJ.1)C0
(custom)
|
|
| ZyXEL | NSA325v2 |
Affected:
V4.81(AALS.1)C0 , ≤ V4.81(AALS.1)C0
(custom)
|
Date Public
2020-02-20 00:00
Credits
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CVE-2019-12581 (GCVE-0-2019-12581)
Vulnerability from nvd – Published: 2019-06-27 14:10 – Updated: 2024-08-04 23:24
VLAI
EPSS
VEX
Summary
A reflective Cross-site scripting (XSS) vulnerability in the free_time_failed.cgi CGI program in selected Zyxel ZyWall, USG, and UAG devices allows remote attackers to inject arbitrary web script or HTML via the err_msg parameter.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.zyxel.com/us/en/ | x_refsource_MISC |
| https://www.zyxel.com/support/vulnerabilities-rel… | x_refsource_CONFIRM |
| https://sec-consult.com/en/blog/advisories/reflec… | x_refsource_MISC |
| https://n-thumann.de/blog/zyxel-gateways-missing-… | x_refsource_MISC |
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CVE-2019-12583 (GCVE-0-2019-12583)
Vulnerability from nvd – Published: 2019-06-27 14:01 – Updated: 2024-08-04 23:24
VLAI
EPSS
VEX
Summary
Missing Access Control in the "Free Time" component of several Zyxel UAG, USG, and ZyWall devices allows a remote attacker to generate guest accounts by directly accessing the account generator. This can lead to unauthorised network access or Denial of Service.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
2 references
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|---|---|
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CVE-2019-9955 (GCVE-0-2019-9955)
Vulnerability from nvd – Published: 2019-04-22 19:38 – Updated: 2024-08-04 22:10
VLAI
EPSS
VEX
Summary
On Zyxel ATP200, ATP500, ATP800, USG20-VPN, USG20W-VPN, USG40, USG40W, USG60, USG60W, USG110, USG210, USG310, USG1100, USG1900, USG2200-VPN, ZyWALL 110, ZyWALL 310, ZyWALL 1100 devices, the security firewall login page is vulnerable to Reflected XSS via the unsanitized 'mp_idx' parameter.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://www.securitymetrics.com/blog/Zyxel-Device… | x_refsource_MISC |
| http://seclists.org/fulldisclosure/2019/Apr/22 | mailing-listx_refsource_FULLDISC |
| https://www.exploit-db.com/exploits/46706/ | exploitx_refsource_EXPLOIT-DB |
| http://packetstormsecurity.com/files/152525/Zyxel… | x_refsource_MISC |
| https://www.zyxel.com/support/reflected-cross-sit… | x_refsource_CONFIRM |
Date Public
2019-04-15 00:00
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CVE-2021-35029 (GCVE-0-2021-35029)
Vulnerability from cvelistv5 – Published: 2021-07-02 10:29 – Updated: 2024-08-04 00:33
VLAI
EPSS
VEX
Summary
An authentication bypasss vulnerability in the web-based management interface of Zyxel USG/Zywall series firmware versions 4.35 through 4.64 and USG Flex, ATP, and VPN series firmware versions 4.35 through 5.01, which could allow a remote attacker to execute arbitrary commands on an affected device.
Severity
9.8 (Critical)
CWE
- CWE-287 - Improper Authentication
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.zyxel.com/support/Zyxel_security_advi… | x_refsource_MISC |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Zyxel | USG/Zywall series Firmware |
Affected:
4.35 through 4.64
|
|
| Zyxel | USG FLEX series Firmware |
Affected:
4.35 through 5.01
|
|
| Zyxel | ATP series Firmware |
Affected:
4.35 through 5.01
|
|
| Zyxel | VPN series Firmware |
Affected:
4.35 through 5.01
|
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CVE-2020-29583 (GCVE-0-2020-29583)
Vulnerability from cvelistv5 – Published: 2020-12-22 00:00 – Updated: 2025-10-21 23:35Summary
Firmware version 4.60 of Zyxel USG devices contains an undocumented account (zyfwp) with an unchangeable password. The password for this account can be found in cleartext in the firmware. This account can be used by someone to login to the ssh server or web interface with admin privileges.
Severity
9.8 (Critical)
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-522 - Insufficiently Protected Credentials
Assigner
References
8 references
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CVE-2020-9054 (GCVE-0-2020-9054)
Vulnerability from cvelistv5 – Published: 2020-03-04 19:30 – Updated: 2025-10-21 23:35Title
ZyXEL NAS products running firmware version 5.21 and earlier are vulnerable to pre-authentication command injection in weblogin.cgi
Summary
Multiple ZyXEL network-attached storage (NAS) devices running firmware version 5.21 contain a pre-authentication command injection vulnerability, which may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable device. ZyXEL NAS devices achieve authentication by using the weblogin.cgi CGI executable. This program fails to properly sanitize the username parameter that is passed to it. If the username parameter contains certain characters, it can allow command injection with the privileges of the web server that runs on the ZyXEL device. Although the web server does not run as the root user, ZyXEL devices include a setuid utility that can be leveraged to run any command with root privileges. As such, it should be assumed that exploitation of this vulnerability can lead to remote code execution with root privileges. By sending a specially-crafted HTTP POST or GET request to a vulnerable ZyXEL device, a remote, unauthenticated attacker may be able to execute arbitrary code on the device. This may happen by directly connecting to a device if it is directly exposed to an attacker. However, there are ways to trigger such crafted requests even if an attacker does not have direct connectivity to a vulnerable devices. For example, simply visiting a website can result in the compromise of any ZyXEL device that is reachable from the client system. Affected products include: NAS326 before firmware V5.21(AAZF.7)C0 NAS520 before firmware V5.21(AASZ.3)C0 NAS540 before firmware V5.21(AATB.4)C0 NAS542 before firmware V5.21(ABAG.4)C0 ZyXEL has made firmware updates available for NAS326, NAS520, NAS540, and NAS542 devices. Affected models that are end-of-support: NSA210, NSA220, NSA220+, NSA221, NSA310, NSA310S, NSA320, NSA320S, NSA325 and NSA325v2
Severity
9.8 (Critical)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://cwe.mitre.org/data/definitions/78.html | x_refsource_MISC |
| https://www.zyxel.com/support/remote-code-executi… | x_refsource_CONFIRM |
| https://kb.cert.org/vuls/id/498544/ | third-party-advisoryx_refsource_CERT-VN |
| https://kb.cert.org/artifacts/cve-2020-9054.html | x_refsource_MISC |
| https://krebsonsecurity.com/2020/02/zyxel-fixes-0… | x_refsource_MISC |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
13 products
| Vendor | Product | Version | |
|---|---|---|---|
| ZyXEL | NAS326 |
Affected:
V5.21(AAZF.7)C0 , ≤ V5.21(AAZF.7)C0
(custom)
|
|
| ZyXEL | NAS520 |
Affected:
V5.21(AASZ.3)C0 , ≤ V5.21(AASZ.3)C0
(custom)
|
|
| ZyXEL | NAS540 |
Affected:
V5.21(AATB.4)C0 , ≤ V5.21(AATB.4)C0
(custom)
|
|
| ZyXEL | NAS542 |
Affected:
V5.21(ABAG.4)C0 , ≤ V5.21(ABAG.4)C0
(custom)
|
|
| ZyXEL | NSA210 |
Affected:
all
|
|
| ZyXEL | NSA220 |
Affected:
all
|
|
| ZyXEL | NSA220+ |
Affected:
all
|
|
| ZyXEL | NSA221 |
Affected:
all
|
|
| ZyXEL | NSA310 |
Affected:
V4.75(AALH.2)C0 , ≤ V4.75(AALH.2)C0
(custom)
|
|
| ZyXEL | NSA320 |
Affected:
all
|
|
| ZyXEL | NSA320S |
Affected:
V4.75(AANV.2)C0 , ≤ V4.75(AANV.2)C0
(custom)
|
|
| ZyXEL | NSA325 |
Affected:
V4.81(AAAJ.1)C0 , ≤ V4.81(AAAJ.1)C0
(custom)
|
|
| ZyXEL | NSA325v2 |
Affected:
V4.81(AALS.1)C0 , ≤ V4.81(AALS.1)C0
(custom)
|
Date Public
2020-02-20 00:00
Credits
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CVE-2019-12581 (GCVE-0-2019-12581)
Vulnerability from cvelistv5 – Published: 2019-06-27 14:10 – Updated: 2024-08-04 23:24
VLAI
EPSS
VEX
Summary
A reflective Cross-site scripting (XSS) vulnerability in the free_time_failed.cgi CGI program in selected Zyxel ZyWall, USG, and UAG devices allows remote attackers to inject arbitrary web script or HTML via the err_msg parameter.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.zyxel.com/us/en/ | x_refsource_MISC |
| https://www.zyxel.com/support/vulnerabilities-rel… | x_refsource_CONFIRM |
| https://sec-consult.com/en/blog/advisories/reflec… | x_refsource_MISC |
| https://n-thumann.de/blog/zyxel-gateways-missing-… | x_refsource_MISC |
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CVE-2019-12583 (GCVE-0-2019-12583)
Vulnerability from cvelistv5 – Published: 2019-06-27 14:01 – Updated: 2024-08-04 23:24
VLAI
EPSS
VEX
Summary
Missing Access Control in the "Free Time" component of several Zyxel UAG, USG, and ZyWall devices allows a remote attacker to generate guest accounts by directly accessing the account generator. This can lead to unauthorised network access or Denial of Service.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.zyxel.com/support/vulnerabilities-rel… | x_refsource_CONFIRM |
| https://n-thumann.de/blog/zyxel-gateways-missing-… | x_refsource_MISC |
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CVE-2019-9955 (GCVE-0-2019-9955)
Vulnerability from cvelistv5 – Published: 2019-04-22 19:38 – Updated: 2024-08-04 22:10
VLAI
EPSS
VEX
Summary
On Zyxel ATP200, ATP500, ATP800, USG20-VPN, USG20W-VPN, USG40, USG40W, USG60, USG60W, USG110, USG210, USG310, USG1100, USG1900, USG2200-VPN, ZyWALL 110, ZyWALL 310, ZyWALL 1100 devices, the security firewall login page is vulnerable to Reflected XSS via the unsanitized 'mp_idx' parameter.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://www.securitymetrics.com/blog/Zyxel-Device… | x_refsource_MISC |
| http://seclists.org/fulldisclosure/2019/Apr/22 | mailing-listx_refsource_FULLDISC |
| https://www.exploit-db.com/exploits/46706/ | exploitx_refsource_EXPLOIT-DB |
| http://packetstormsecurity.com/files/152525/Zyxel… | x_refsource_MISC |
| https://www.zyxel.com/support/reflected-cross-sit… | x_refsource_CONFIRM |
Date Public
2019-04-15 00:00
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