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Zyxel

Records341All Threatist records
Exploited (KEV)13In CISA KEV
CVSS critical64CVSS 9.0–10.0
CVSS high136CVSS 7.0–8.9

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Zyxel records in CISA KEV

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341 records

TI-2023-16198 CVE-2023-33010 · GHSA-fqv9-84fh-jjgr

Buffer overflow in Zyxel ATP series firmware

Priority CRITICAL 100KEV

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…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.29024 Published 2023-05-24 No fix listed CWE-120
TI-2023-16197 CVE-2023-33009 · GHSA-g3f9-6h7x-x69v

Buffer overflow in Zyxel ATP series firmware

Priority CRITICAL 100KEV

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…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.28144 Published 2023-05-24 No fix listed CWE-120
Priority CRITICAL 100KEV

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…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.99284 Published 2023-04-25 No fix listed CWE-78
Priority CRITICAL 100KEV

The pre-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.14)C0, NAS540 firmware versions prior to V5.21(AATB.11)C0, and NAS542 firmware versions prior to V5.21(ABAG…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.82264 Published 2023-06-19 Fixed in V5.21(AAZF.14)C0, V5.21(AATB.11)C0 +1 CWE-78
Priority CRITICAL 100KEV

A OS command injection vulnerability in the CGI program of Zyxel USG FLEX 100(W) firmware versions 5.00 through 5.21 Patch 1, USG FLEX 200 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 500 firmware versions 5.00…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.99944 Published 2022-05-12 No fix listed CWE-78
TI-2020-07267 CVE-2020-9054 · GHSA-w6h5-rjp3-hxvc

OS command injection in Zyxel NAS326

Priority CRITICAL 100KEV

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 co…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.99988 Published 2020-03-04 No fix listed CWE-78
Priority CRITICAL 100KEV

The ZyXEL P660HN-T1A v1 TCLinux Fw $7.3.15.0 v001 / 3.40(ULM.0)b31 router distributed by TrueOnline has a command injection vulnerability in the Remote System Log forwarding function, which is accessible by an unauthenti…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.94508 Published 2019-05-02 No fix listed CWE-78
TI-2024-10813 CVE-2024-11667 · GHSA-h9fh-gm4r-6cxh

Path traversal in Zyxel ATP series firmware

Priority CRITICAL 99KEV

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…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.02954 Published 2024-11-27 No fix listed CWE-22
Priority CRITICAL 97KEV

A stack-based buffer overflow vulnerability in the CGI program of Zyxel GS1900-48HPv2 firmware versions through 2.90(ABTQ.1)C0 could allow a LAN-based, unauthenticated attacker to exploit the flaw and potentially execute…

CVSS 3.1HIGH 8.8 Adjacent network No auth No interaction EPSS 0.02734 Published 2026-06-16 No fix listed CWE-121
Priority CRITICAL 97KEV

**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…

CVSS 3.1HIGH 8.8 Network Low privileges No interaction EPSS 0.22888 Published 2025-02-04 No fix listed CWE-78
Priority CRITICAL 97KEV

**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…

CVSS 3.1HIGH 8.8 Network Low privileges No interaction EPSS 0.20703 Published 2025-02-04 No fix listed CWE-78
Priority CRITICAL 92

** UNSUPPORTED WHEN ASSIGNED ** The command injection vulnerability in the CGI program "remote_help-cgi" in Zyxel NAS326 firmware versions before V5.21(AAZF.17)C0 and NAS542 firmware versions before V5.21(ABAG.14)C0 coul…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.90349 Published 2024-06-04 Fixed in V5.21(AAZF.17)C0, V5.21(ABAG.14)C0 CWE-78
Priority CRITICAL 91

** UNSUPPORTED WHEN ASSIGNED ** The command injection vulnerability in the “setCookie” parameter in Zyxel NAS326 firmware versions before V5.21(AAZF.17)C0 and NAS542 firmware versions before V5.21(ABAG.14)C0 could allow…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.86205 Published 2024-06-04 Fixed in V5.21(AAZF.17)C0, V5.21(ABAG.14)C0 CWE-78
Priority CRITICAL 86

An authentication bypass vulnerability in the CGI program of Zyxel USG/ZyWALL series firmware versions 4.20 through 4.70, USG FLEX series firmware versions 4.50 through 5.20, ATP series firmware versions 4.32 through 5.2…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.95134 Published 2022-03-28 No fix listed CWE-287
Priority HIGH 82

The improper neutralization of special elements in the WSGI server of the Zyxel NAS326 firmware version V5.21(AAZF.14)C0 and NAS542 firmware version V5.21(ABAG.11)C0 could allow an unauthenticated attacker to execute som…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.2974 Published 2023-11-30 No fix listed CWE-78
Priority HIGH 82

A command injection vulnerability in the web server of the Zyxel NAS326 firmware version V5.21(AAZF.14)C0 and NAS542 firmware version V5.21(ABAG.11)C0 could allow an unauthenticated attacker to execute some operating sys…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.41348 Published 2023-11-30 No fix listed CWE-78
Priority HIGH 80

A command injection vulnerability in the web interface of the Zyxel NWA-1100-NH firmware could allow an attacker to execute arbitrary OS commands on the device.

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.71048 Published 2022-03-01 No fix listed CWE-78
Priority HIGH 75

** UNSUPPORTED WHEN ASSIGNED ** A command injection vulnerability in the functions formSysCmd(), formUpgradeCert(), and formDelcert() in the Zyxel NWA1100-N firmware version 1.00(AACE.1)C0 could allow an unauthenticated…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.04392 Published 2024-08-30 No fix listed CWE-78
Priority HIGH 72

A post-authentication command injection vulnerability in the WSGI server of the Zyxel NAS326 firmware version V5.21(AAZF.14)C0 and NAS542 firmware version V5.21(ABAG.11)C0 could allow an authenticated attacker to execute…

CVSS 3.1HIGH 8.8 Network Low privileges No interaction EPSS 0.602 Published 2023-11-30 No fix listed CWE-78
Priority HIGH 72

The sensitive information exposure vulnerability in the CGI “Export_Log” and the binary “zcmd” in Zyxel DX5401-B0 firmware versions prior to V5.17(ABYO.1)C0 could allow a remote unauthenticated attacker to read the syste…

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.57778 Published 2023-04-27 Fixed in V5.17(ABYO.1)C0 CWE-200
Priority HIGH 70

A command injection vulnerability in the “show_zysync_server_contents” function of the Zyxel NAS326 firmware version V5.21(AAZF.14)C0 and NAS542 firmware version V5.21(ABAG.11)C0 could allow an unauthenticated attacker t…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.39998 Published 2023-11-30 No fix listed CWE-78
Priority HIGH 69

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…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00951 Published 2025-04-22 No fix listed CWE-732
Priority HIGH 69

** UNSUPPORTED WHEN ASSIGNED ** The remote code execution vulnerability in the CGI program “file_upload-cgi” in Zyxel NAS326 firmware versions before V5.21(AAZF.17)C0 and NAS542 firmware versions before V5.21(ABAG.14)C0…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.22784 Published 2024-06-04 Fixed in V5.21(AAZF.17)C0, V5.21(ABAG.14)C0 CWE-434
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