Vendor
Zyxel
176 known vulnerabilities.
Products
USG FLEX series firmware 51
ATP series firmware 49
VPN series Firmware 37
USG FLEX 50(W) series firmware 28
USG20(W)-VPN series firmware 28
NAS326 firmware 15
NAS542 firmware 14
USG FLEX 50(W) firmware 11
USG20(W)-VPN firmware 8
USG/Zywall series Firmware 8
VMG8825-T50K firmware 8
VMG3625-T50B firmware 7
WAC500 firmware 7
WBE660S firmware 5
NWA50AX firmware 5
ZyWALL/USG series firmware 5
NBG-418N v2 firmware 5
NR7101 firmware 5
NXC2500 firmware 4
WRE6505 v2 firmware 4
WAH7601 4
GS1900-8 firmware 4
GS1900-48 firmware 4
WX3100-T0 firmware 4
VMG4325-B10A firmware 3
NSG series firmware 3
WAX510D firmware 3
GS1900-8HP firmware 3
GS1900-10HP firmware 3
GS1900-24EP firmware 3
USG FLEX 100(W) firmware 3
USG FLEX 200 firmware 3
USG FLEX 500 firmware 3
USG FLEX 700 firmware 3
USG 20(W)-VPN firmware 3
WAX300H firmware 3
USG FLEX H series uOS firmware 3
NWA110AX firmware 3
WBE530 firmware 2
DX5401-B0 firmware 2
76 results · Clear filters · Feed
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High 8.8
A buffer overflow vulnerability in the zdp_wtp binary in Zyxel NWA110AX firmware versions through 7.12(ABTG.0)C0 could …
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High 8.8CVE-2026-107441 Public exploit
An out-of-bounds write vulnerability in the CGI program of Zyxel GS1900-24E firmware versions through 2.90(AAHK.2)C0 co…
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High 8.2
Exposure of Sensitive Information to an Unauthorized Actor in Zyxel's WAH7601
Insufficiently Protected Credentials vulnerability in Zyxel Networks WAH7601 allows Retrieve Embedded Sensitive Data. This issue affects WAH7601: through 20072026.
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High 7.3
Hardcoded Credentials in Zyxel WAH7601 Router
Use of Hard-coded Credentials vulnerability in Zyxel Networks WAH7601 allows Read Sensitive Constants Within an Executable. This issue affects WAH7601: through 20.07.2026.
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High 7.2
A path traversal vulnerability in the CLI command used to execute configuration files in Zyxel ATP series firmware vers…
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High 7.2CVE-2026-6837 Public exploit
A post-authentication command injection vulnerability in the "export-cgi" CGI program in Zyxel WAX650S firmware version…
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High 7.2CVE-2026-6952 Public exploit
A post-authentication command injection vulnerability in the "LogServer" field of the syslog component in Zyxel AX7501-…
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High 8.8CVE-2026-7273 Exploited
A stack-based buffer overflow vulnerability in the CGI program of Zyxel GS1900-48HPv2 firmware versions through 2.90(AB…
KEV Sep 21, 2026 -
High 7.5
** UNSUPPORTED WHEN ASSIGNED ** A buffer overflow vulnerability in the formWep(), formWlAc(), formPasswordSetup(), form…
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High 8.8
** UNSUPPORTED WHEN ASSIGNED ** A command injection vulnerability in the CGI program of Zyxel WRE6505 v2 firmware versi…
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High 7.2
A post-authentication command injection vulnerability in the “DomainName” parameter of the DHCP configuration file in Z…
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High 7.2CVE-2026-1459 Public exploit
A post-authentication command injection vulnerability in the TR-369 certificate download CGI program of the Zyxel VMG36…
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High 8.8
A post-authentication command injection vulnerability in the log file download function of the Zyxel EX3301-T0 firmware…
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High 7.2
A post‑authentication command injection vulnerability in the Dynamic DNS (DDNS) configuration CLI command in Zyxel ATP …
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High 8.8
A post-authentication command injection vulnerability in the "priv" parameter of Zyxel DX3300-T0 firmware version 5.50(…
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High 8.1
A missing authorization vulnerability in Zyxel ATP series firmware versions from V4.32 through V5.40, USG FLEX series f…
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High 7.2
A post-authentication command injection vulnerability in Zyxel ATP series firmware versions from V4.32 through V5.40, U…
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High 7.2
A path traversal vulnerability in the file_upload-cgi CGI program of Zyxel NWA50AX PRO firmware version 7.10(ACGE.2) an…
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High 7.8CVE-2025-1731 Public exploit
An incorrect permission assignment vulnerability in the PostgreSQL commands of the Zyxel USG FLEX H series uOS firmware…
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High 7.2
A post-authentication command injection vulnerability in the ”zyUtilMailSend” function of the Zyxel AX7501-B1 firmware …
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High 7.2
A post-authentication command injection vulnerability in the "ZyEE" function of the Zyxel EX5601-T1 firmware version V5…
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High 7.2
A post-authentication command injection vulnerability in the "DNSServer” parameter of the diagnostic function in the Zy…
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High 8.8
**UNSUPPORTED WHEN ASSIGNED** A post-authentication command injection vulnerability in the management commands of the l…
KEV Feb 11, 2025 -
High 8.8
**UNSUPPORTED WHEN ASSIGNED** A post-authentication command injection vulnerability in the CGI program of the legacy DS…
KEV Feb 11, 2025 -
High 8.8
An improper privilege management vulnerability in the web management interface of the Zyxel WBE530 firmware versions th…
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High 7.2
A post-authentication command injection vulnerability in the "host" parameter of the diagnostic function in Zyxel VMG40…
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High 7.5
A buffer overflow vulnerability in the packet parser of the third-party library "libclinkc" in Zyxel VMG8825-T50K firmw…
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High 7.5CVE-2024-11667 Exploited · Ransomware
A directory traversal vulnerability in the web management interface of Zyxel ATP series firmware versions V5.00 through…
KEV Dec 3, 2024 -
High 7.5
**UNSUPPORTED WHEN ASSIGNED** The improper authentication vulnerability in the Zyxel P-6101C ADSL modem firmware versio…
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High 7.2
A post-authentication command injection vulnerability in Zyxel ATP series firmware versions from V4.32 through V5.38, U…
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High 7.2
A post-authentication command injection vulnerability in Zyxel ATP series firmware versions from V5.00 through V5.38, U…
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High 7.5
A null pointer dereference vulnerability in Zyxel ATP series firmware versions from V4.32 through V5.38, USG FLEX serie…
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High 8.1
A command injection vulnerability in the IPSec VPN feature of Zyxel ATP series firmware versions from V4.32 through V5.…
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High 7.2
A post-authentication command injection vulnerability in Zyxel ATP series firmware versions from V4.60 through V5.38 an…
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High 7.5
A buffer overflow vulnerability in the library "libclinkc" of the Zyxel VMG8825-T50K firmware version 5.50(ABOM.8)C0 co…
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High 7.5
** UNSUPPORTED WHEN ASSIGNED ** A command injection vulnerability in the functions formSysCmd(), formUpgradeCert(), and…
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High 8.1
A format string vulnerability in a function of the IPSec VPN feature in Zyxel ATP series firmware versions from 4.32 th…
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High 7.2
A post-authentication command injection vulnerability in the file upload binary in Zyxel ATP series firmware versions f…
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High 7.2CVE-2023-5372 EPSS 28%
The post-authentication command injection vulnerability in Zyxel NAS326 firmware versions through V5.21(AAZF.15)C0 and …
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High 8.8CVE-2023-37928 EPSS 60%
A post-authentication command injection vulnerability in the WSGI server of the Zyxel NAS326 firmware version V5.21(AAZ…