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Zyxel

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329 CVEs • 885 products

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CVEs (329)

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1Zyxel
1Amg1302 T10b Firmware
Jun 17, 2026
Apr 22, 2025
N/A· v4
4.9 MEDIUM· v3
N/A· v2
**UNSUPPORTED WHEN ASSIGNED** A path traversal vulnerability in the web management interface of the Zyxel AMG1302-T10B firmware version 2.00(AAJC.16)C0 could allow an authenticated attacker with administrator privileges...Show more
**UNSUPPORTED WHEN ASSIGNED** A path traversal vulnerability in the web management interface of the Zyxel AMG1302-T10B firmware version 2.00(AAJC.16)C0 could allow an authenticated attacker with administrator privileges to access restricted directories by sending a crafted HTTP request to an affected device.Show less
1Zyxel
1Uos
Jun 17, 2026
Apr 22, 2025
N/A· v4
6.7 MEDIUM· v3
N/A· v2
An improper privilege management vulnerability in the recovery function of the Zyxel USG FLEX H series uOS firmware version V1.31 and earlier could allow an authenticated local attacker with administrator privileges to u...Show more
An improper privilege management vulnerability in the recovery function of the Zyxel USG FLEX H series uOS firmware version V1.31 and earlier could allow an authenticated local attacker with administrator privileges to upload a crafted configuration file and escalate privileges on a vulnerable device.Show less
1Zyxel
1Uos
Jun 17, 2026
Apr 22, 2025
N/A· v4
7.8 HIGH· v3
N/A· v2
An incorrect permission assignment vulnerability in the PostgreSQL commands of the Zyxel USG FLEX H series uOS firmware versions from V1.20 through V1.31 could allow an authenticated local attacker with low privileges to...Show more
An incorrect permission assignment vulnerability in the PostgreSQL commands of the Zyxel USG FLEX H series uOS firmware versions from V1.20 through V1.31 could allow an authenticated local attacker with low privileges to gain access to the Linux shell and escalate their privileges by crafting malicious scripts or modifying system configurations with administrator-level access through a stolen token. Modifying the system configuration is only possible if the administrator has not logged out and the token remains valid.Show less
1Zyxel
41Ax7501 B0 Firmware
Ax7501 B1 FirmwareDx3300 T0 Firmware+38 more
Jun 17, 2026
Mar 11, 2025
N/A· v4
7.2 HIGH· v3
N/A· v2
A post-authentication command injection vulnerability in the ”zyUtilMailSend” function of the Zyxel AX7501-B1 firmware version V5.17(ABPC.5.3)C0 and earlier could allow an authenticated attacker with administrator privil...Show more
A post-authentication command injection vulnerability in the ”zyUtilMailSend” function of the Zyxel AX7501-B1 firmware version V5.17(ABPC.5.3)C0 and earlier could allow an authenticated attacker with administrator privileges to execute operating system (OS) commands on a vulnerable device.Show less
1Zyxel
38Ax7501 B0 Firmware
Ax7501 B1 FirmwareDx3300 T0 Firmware+35 more
Jun 17, 2026
Mar 11, 2025
N/A· v4
7.2 HIGH· v3
N/A· v2
A post-authentication command injection vulnerability in the "ZyEE" function of the Zyxel EX5601-T1 firmware version V5.70(ACDZ.3.6)C0 and earlier could allow an authenticated attacker with administrator privileges to ex...Show more
A post-authentication command injection vulnerability in the "ZyEE" function of the Zyxel EX5601-T1 firmware version V5.70(ACDZ.3.6)C0 and earlier could allow an authenticated attacker with administrator privileges to execute operating system (OS) commands on a vulnerable device.Show less
1Zyxel
6Dm4200 B0 Firmware
Emg5723 T50k FirmwareVmg3927 T50k Firmware+3 more
Jun 17, 2026
Mar 11, 2025
N/A· v4
7.2 HIGH· v3
N/A· v2
A post-authentication command injection vulnerability in the "DNSServer” parameter of the diagnostic function in the Zyxel VMG8825-T50K firmware version V5.50(ABOM.8.5)C0 and earlier could allow an authenticated attacker...Show more
A post-authentication command injection vulnerability in the "DNSServer” parameter of the diagnostic function in the Zyxel VMG8825-T50K firmware version V5.50(ABOM.8.5)C0 and earlier could allow an authenticated attacker with administrator privileges to execute operating system (OS) commands on a vulnerable device.Show less
1Zyxel
14Sbg3300 N000 Firmware
Sbg3300 Nb00 FirmwareSbg3500 N000 Firmware+11 more
Jun 17, 2026
Feb 4, 2025
N/A· v4
9.8 CRITICAL· v3
N/A· v2
**UNSUPPORTED WHEN ASSIGNED** Insecure default credentials for the Telnet function in the legacy DSL CPE Zyxel VMG4325-B10A firmware version 1.00(AAFR.4)C0_20170615 could allow an attacker to log in to the management int...Show more
**UNSUPPORTED WHEN ASSIGNED** Insecure default credentials for the Telnet function in the legacy DSL CPE Zyxel VMG4325-B10A firmware version 1.00(AAFR.4)C0_20170615 could allow an attacker to log in to the management interface if the administrators have the option to change the default credentials but fail to do so.Show less
1Zyxel
14Sbg3300 N000 Firmware
Sbg3300 Nb00 FirmwareSbg3500 N000 Firmware+11 more
Jun 17, 2026
Feb 4, 2025
N/A· v4
8.8 HIGH· v3
N/A· v2
**UNSUPPORTED WHEN ASSIGNED** A post-authentication command injection vulnerability in the management commands of the legacy DSL CPE Zyxel VMG4325-B10A firmware version 1.00(AAFR.4)C0_20170615 could allow an authenticate...Show more
**UNSUPPORTED WHEN ASSIGNED** A post-authentication command injection vulnerability in the management commands of the legacy DSL CPE Zyxel VMG4325-B10A firmware version 1.00(AAFR.4)C0_20170615 could allow an authenticated attacker to execute operating system (OS) commands on an affected device via Telnet.Show less
1Zyxel
14Sbg3300 N000 Firmware
Sbg3300 Nb00 FirmwareSbg3500 N000 Firmware+11 more
Jun 17, 2026
Feb 4, 2025
N/A· v4
8.8 HIGH· v3
N/A· v2
**UNSUPPORTED WHEN ASSIGNED** A post-authentication command injection vulnerability in the CGI program of the legacy DSL CPE Zyxel VMG4325-B10A firmware version 1.00(AAFR.4)C0_20170615 could allow an authenticated attack...Show more
**UNSUPPORTED WHEN ASSIGNED** A post-authentication command injection vulnerability in the CGI program of the legacy DSL CPE Zyxel VMG4325-B10A firmware version 1.00(AAFR.4)C0_20170615 could allow an authenticated attacker to execute operating system (OS) commands on an affected device by sending a crafted HTTP POST request.Show less
1Zyxel
23Nwa110ax Firmware
Nwa1123acv3 FirmwareNwa130be Firmware+20 more
Jun 17, 2026
Jan 14, 2025
N/A· v4
8.8 HIGH· v3
N/A· v2
An improper privilege management vulnerability in the web management interface of the Zyxel WBE530 firmware versions through 7.00(ACLE.3) and WBE660S firmware versions through 6.70(ACGG.2) could allow an authenticated us...Show more
An improper privilege management vulnerability in the web management interface of the Zyxel WBE530 firmware versions through 7.00(ACLE.3) and WBE660S firmware versions through 6.70(ACGG.2) could allow an authenticated user with limited privileges to escalate their privileges to that of an administrator, enabling them to upload configuration files to a vulnerable device.Show less
1Zyxel
6Emg6726 B10a Firmware
Vmg3927 B50b FirmwareVmg4005 B50a Firmware+3 more
Jun 17, 2026
Dec 3, 2024
N/A· v4
7.2 HIGH· v3
N/A· v2
A post-authentication command injection vulnerability in the "host" parameter of the diagnostic function in Zyxel VMG4005-B50A firmware versions through V5.15(ABQA.2.2)C0 could allow an authenticated attacker with admini...Show more
A post-authentication command injection vulnerability in the "host" parameter of the diagnostic function in Zyxel VMG4005-B50A firmware versions through V5.15(ABQA.2.2)C0 could allow an authenticated attacker with administrator privileges to execute operating system (OS) commands on a vulnerable device.Show less
1Zyxel
36Ax7501 B0 Firmware
Ax7501 B1 FirmwareDx3300 T0 Firmware+33 more
Jun 17, 2026
Dec 3, 2024
N/A· v4
4.9 MEDIUM· v3
N/A· v2
A post-authentication buffer overflow vulnerability in the parameter "action" of the CGI program in Zyxel VMG3625-T50B firmware versions through V5.50(ABPM.9.2)C0 could allow an authenticated attacker with administrator...Show more
A post-authentication buffer overflow vulnerability in the parameter "action" of the CGI program in Zyxel VMG3625-T50B firmware versions through V5.50(ABPM.9.2)C0 could allow an authenticated attacker with administrator privileges to cause a temporary denial of service (DoS) condition against the web management interface by sending a crafted HTTP GET request to a vulnerable device if the function ZyEE is enabled.Show less
1Zyxel
63Ax7501 B0 Firmware
Ax7501 B1 FirmwareDx3300 T0 Firmware+60 more
Jun 17, 2026
Dec 3, 2024
N/A· v4
7.5 HIGH· v3
N/A· v2
A buffer overflow vulnerability in the packet parser of the third-party library "libclinkc" in Zyxel VMG8825-T50K firmware versions through V5.50(ABOM.8.4)C0 could allow an attacker to cause a temporary denial of service...Show more
A buffer overflow vulnerability in the packet parser of the third-party library "libclinkc" in Zyxel VMG8825-T50K firmware versions through V5.50(ABOM.8.4)C0 could allow an attacker to cause a temporary denial of service (DoS) condition against the web management interface by sending a crafted HTTP POST request to a vulnerable device.Show less
1Zyxel
1Zld
Jun 17, 2026
Nov 27, 2024
N/A· v4
9.8 CRITICAL· v3
N/A· v2
A directory traversal vulnerability in the web management interface of Zyxel ATP series firmware versions V5.00 through V5.38, USG FLEX series firmware versions V5.00 through V5.38, USG FLEX 50(W) series firmware version...Show more
A directory traversal vulnerability in the web management interface of Zyxel ATP series firmware versions V5.00 through V5.38, USG FLEX series firmware versions V5.00 through V5.38, USG FLEX 50(W) series firmware versions V5.10 through V5.38, and USG20(W)-VPN series firmware versions V5.10 through V5.38 could allow an attacker to download or upload files via a crafted URL.Show less
1Zyxel
1P6101c Firmware
Jun 17, 2026
Nov 20, 2024
N/A· v4
7.5 HIGH· v3
N/A· v2
**UNSUPPORTED WHEN ASSIGNED** The improper authentication vulnerability in the Zyxel P-6101C ADSL modem firmware version P-6101CSA6AP_20140331 could allow an unauthenticated attacker to read some device information via a...Show more
**UNSUPPORTED WHEN ASSIGNED** The improper authentication vulnerability in the Zyxel P-6101C ADSL modem firmware version P-6101CSA6AP_20140331 could allow an unauthenticated attacker to read some device information via a crafted HTTP HEAD method.Show less
1Zyxel
10Gs1900 10hp Firmware
Gs1900 16 FirmwareGs1900 24 Firmware+7 more
Jun 17, 2026
Nov 12, 2024
N/A· v4
4.5 MEDIUM· v3
N/A· v2
A buffer overflow vulnerability in the CGI program in the Zyxel GS1900-48 switch firmware version V2.80(AAHN.1)C0 and earlier could allow an authenticated, LAN-based attacker with administrator privileges to cause denial...Show more
A buffer overflow vulnerability in the CGI program in the Zyxel GS1900-48 switch firmware version V2.80(AAHN.1)C0 and earlier could allow an authenticated, LAN-based attacker with administrator privileges to cause denial of service (DoS) conditions via a crafted URL.Show less
1Zyxel
10Gs1900 10hp Firmware
Gs1900 16 FirmwareGs1900 24 Firmware+7 more
Jun 17, 2026
Nov 12, 2024
N/A· v4
6.8 MEDIUM· v3
N/A· v2
A post-authentication command injection vulnerability in the CGI program in the Zyxel GS1900-48 switch firmware version V2.80(AAHN.1)C0 and earlier could allow an authenticated, LAN-based attacker with administrator priv...Show more
A post-authentication command injection vulnerability in the CGI program in the Zyxel GS1900-48 switch firmware version V2.80(AAHN.1)C0 and earlier could allow an authenticated, LAN-based attacker with administrator privileges to execute some operating system (OS) commands on an affected device by sending a crafted HTTP request.Show less
1Zyxel
1Uos
Jun 17, 2026
Oct 22, 2024
N/A· v4
7.8 HIGH· v3
N/A· v2
The insufficiently protected credentials vulnerability in the CLI command of the USG FLEX H series uOS firmware version V1.21 and earlier versions could allow an authenticated local attacker to gain privilege escalation...Show more
The insufficiently protected credentials vulnerability in the CLI command of the USG FLEX H series uOS firmware version V1.21 and earlier versions could allow an authenticated local attacker to gain privilege escalation by stealing the authentication token of a login administrator. Note that this attack could be successful only if the administrator has not logged out.Show less
1Zyxel
41Ax7501 B1 Firmware
Dx3300 T0 FirmwareDx3300 T1 Firmware+38 more
Jun 17, 2026
Sep 24, 2024
N/A· v4
4.9 MEDIUM· v3
N/A· v2
An improper restriction of operations within the bounds of a memory buffer in the USB file-sharing handler of the Zyxel VMG8825-T50K firmware versions through 5.50(ABOM.8)C0 could allow an authenticated attacker with adm...Show more
An improper restriction of operations within the bounds of a memory buffer in the USB file-sharing handler of the Zyxel VMG8825-T50K firmware versions through 5.50(ABOM.8)C0 could allow an authenticated attacker with administrator privileges to cause potential memory corruptions, resulting in a thread crash on an affected device.Show less
1Zyxel
41Ax7501 B1 Firmware
Dx3300 T0 FirmwareDx3300 T1 Firmware+38 more
Jun 17, 2026
Sep 24, 2024
N/A· v4
4.9 MEDIUM· v3
N/A· v2
An improper restriction of operations within the bounds of a memory buffer in the MAC address parser of the Zyxel VMG8825-T50K firmware versions through 5.50(ABOM.8)C0 could allow an authenticated attacker with administr...Show more
An improper restriction of operations within the bounds of a memory buffer in the MAC address parser of the Zyxel VMG8825-T50K firmware versions through 5.50(ABOM.8)C0 could allow an authenticated attacker with administrator privileges to cause potential memory corruptions, resulting in a thread crash on an affected device.Show less