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zyxel vulnerabilities and exploits
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8.8
CVSSv3
CVE-2020-13364
A backdoor in certain Zyxel products allows remote TELNET access via a CGI script. This affects NAS520 V5.21(AASZ.4)C0, V5.21(AASZ.0)C0, V5.11(AASZ.3)C0, and V5.11(AASZ.0)C0; NAS542 V5.11(ABAG.0)C0, V5.20(ABAG.1)C0, and V5.21(ABAG.3)C0; NSA325 v2_V4.81(AALS.0)C0 and V4.81(AAAJ.1)...
Zyxel Nas326 Firmware
Zyxel Nas520 Firmware
Zyxel Nas540 Firmware
Zyxel Nas542 Firmware
1 Github repository
8.8
CVSSv3
CVE-2020-13365
Certain Zyxel products have a locally accessible binary that allows a non-root user to generate a password for an undocumented user account that can be used for a TELNET session as root. This affects NAS520 V5.21(AASZ.4)C0, V5.21(AASZ.0)C0, V5.11(AASZ.3)C0, and V5.11(AASZ.0)C0; N...
Zyxel Nas326 Firmware
Zyxel Nas520 Firmware
Zyxel Nas540 Firmware
Zyxel Nas542 Firmware
1 Github repository
8.8
CVSSv3
CVE-2019-15799
An issue exists on Zyxel GS1900 devices with firmware prior to 2.50(AAHH.0)C0. User accounts created through the web interface of the device, when given non-admin level privileges, have the same level of privileged access as administrators when connecting to the device via SSH (w...
Zyxel Gs1900-8 Firmware
Zyxel Gs1900-8hp Firmware
Zyxel Gs1900-10hp Firmware
Zyxel Gs1900-16 Firmware
Zyxel Gs1900-24e Firmware
Zyxel Gs1900-24 Firmware
Zyxel Gs1900-24hp Firmware
Zyxel Gs1900-48 Firmware
Zyxel Gs1900-48hp Firmware
2 Github repositories
8.8
CVSSv3
CVE-2017-18370
The ZyXEL P660HN-T1A v2 TCLinux Fw #7.3.37.6 router distributed by TrueOnline has a command injection vulnerability in the Remote System Log forwarding function, which is only accessible by an authenticated user. The vulnerability is in the logSet.asp page and can be exploited th...
Billion 5200w-t Firmware 7.3.8.0
Zyxel P660hn-t1a V2 Firmware 7.3.37.6
Zyxel P660hn-t1a V1 Firmware 7.3.37.6
8.8
CVSSv3
CVE-2017-18372
The Billion 5200W-T TCLinux Fw $7.3.8.0 v008 130603 router distributed by TrueOnline has a command injection vulnerability in the Time Setting function, which is only accessible by an authenticated user. The vulnerability is in the tools_time.asp page and can be exploited through...
Billion 5200w-t Firmware 7.3.8.0
Zyxel P660hn-t1a V2 Firmware 7.3.15.0
Zyxel P660hn-t1a V1 Firmware 7.3.15.0
8.8
CVSSv3
CVE-2017-18374
The ZyXEL P660HN-T1A v1 TCLinux Fw $7.3.15.0 v001 / 3.40(ULM.0)b31 router distributed by TrueOnline has two user accounts with default passwords, including a hardcoded service account with the username true and password true. These accounts can be used to login to the web interfa...
Billion 5200w-t Firmware 7.3.8.0
Zyxel P660hn-t1a V2 Firmware 7.3.15.0
Zyxel P660hn-t1a V1 Firmware 7.3.15.0
8.8
CVSSv3
CVE-2019-10630
A plaintext password vulnerability in the Zyxel NAS 326 up to and including 5.21 allows an elevated privileged user to get the admin password of the device.
Zyxel Nas326 Firmware
8.8
CVSSv3
CVE-2019-10631
Shell Metacharacter Injection in the package installer on Zyxel NAS 326 version 5.21 and below allows an authenticated malicious user to execute arbitrary code via multiple different requests.
Zyxel Nas326 Firmware
8.8
CVSSv3
CVE-2019-10633
An eval injection vulnerability in the Python web server routing on the Zyxel NAS 326 version 5.21 and below allows a remote authenticated malicious user to execute arbitrary code via the tjp6jp6y4, simZysh, and ck6fup6 APIs.
Zyxel Nas326 Firmware
8.8
CVSSv3
CVE-2019-7391
ZyXEL VMG3312-B10B DSL-491HNU-B1B v2 devices allow login/login-page.cgi CSRF.
Zyxel Dsl-491hnu-b10b Firmware -
Zyxel Dsl-491hnu-b1b V2 Firmware -
1 EDB exploit
CVSSv3
CVSSv2
CVSSv3
VMScore
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remote attackers
remote
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