NVD

CVE-2023-6398 Detail

Description

A post-authentication command injection vulnerability in the file upload binary in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50(W) series firmware versions from 4.16 through 5.37 Patch 1, USG20(W)-VPN series firmware versions from 4.16 through 5.37 Patch 1, USG FLEX H series firmware versions from 1.10 through 1.10 Patch 1, NWA50AX firmware versions through 6.29(ABYW.3), WAC500 firmware versions through 6.65(ABVS.1), WAX300H firmware versions through 6.60(ACHF.1), and WBE660S firmware versions through 6.65(ACGG.1) could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands on an affected device via FTP.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

Nist CVSS score does not match with CNA score

CNA: Zyxel Corporation

Base Score: 7.2 HIGH

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to [email protected].

URL	Source(s)	Tag(s)
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-aps-02-20-2024	CVE, Zyxel Corporation	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-78	Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')	Zyxel Corporation

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

8 change records found show changes

CVE Modified by CISA-ADP 6/17/2026 2:50:41 AM

Action

Type

Old Value

New Value

Added

Affected

Record truncated, showing 2048 of 2213 characters.
View Entire Change Record

[{"vendor":"zyxel","product":"atp800_firmware","defaultStatus":"unknown","cpes":["cpe:2.3:o:zyxel:atp100_firmware:*:*:*:*:*:*:*:*","cpe:2.3:o:zyxel:atp200_firmware:*:*:*:*:*:*:*:*","cpe:2.3:o:zyxel:atp500_firmware:*:*:*:*:*:*:*:*","cpe:2.3:o:zyxel:atp700_firmware:*:*:*:*:*:*:*:*","cpe:2.3:o:zyxel:atp800_firmware:*:*:*:*:*:*:*:*","cpe:2.3:o:zyxel:usg_flex_200_firmware:*:*:*:*:*:*:*:*","cpe:2.3:o:zyxel:usg_flex_500_firmware:*:*:*:*:*:*:*:*"],"versions":[{"version":"4.32","lessThanOrEqual":"5.37_patch1","versionType":"custom","status":"affected"}]},{"vendor":"zyxel","product":"usg_flex_700_firmware","defaultStatus":"unknown","cpes":["cpe:2.3:o:zyxel:usg_flex_100w_firmware:*:*:*:*:*:*:*:*","cpe:2.3:o:zyxel:usg_flex_200_firmware:*:*:*:*:*:*:*:*","cpe:2.3:o:zyxel:usg_flex_500_firmware:*:*:*:*:*:*:*:*","cpe:2.3:o:zyxel:usg_flex_500w_firmware:*:*:*:*:*:*:*:*","cpe:2.3:o:zyxel:usg_flex_700_firmware:*:*:*:*:*:*:*:*"],"versions":[{"version":"4.50","lessThan":"5.37_patch1","versionType":"custom","status":"affected"}]},{"vendor":"zyxel","product":"nwa50ax_firmware","defaultStatus":"unknown","cpes":["cpe:2.3:o:zyxel:nwa50ax_firmware:-:*:*:*:*:*:*:*"],"versions":[{"version":"0","lessThan":"6.29\\(abyw.4\\)","versionType":"custom","status":"affected"}]},{"vendor":"zyxel","product":"wac500_firmware","defaultStatus":"unknown","cpes":["cpe:2.3:o:zyxel:wac500_firmware:-:*:*:*:*:*:*:*"],"versions":[{"version":"0","lessThan":"6.70\\(abvs.1\\)","versionType":"custom","status":"affected"}]},{"vendor":"zyxel","product":"wax300h_firmware","defaultStatus":"unknown","cpes":["cpe:2.3:o:zyxel:wax300h_firmware:*:*:*:*:*:*:*:*"],"versions":[{"version":"0","lessThan":"6.70\\(achf.1\\)","versionType":"custom","status":"affected"}]},{"vendor":"zyxel","product":"wbe660s_firmware","defaultStatus":"unknown","cpes":["cpe:2.3:o:zyxel:wbe660s_firmware:*:*:*:*:*:*:*:*"],"versions":[{"version":"0","lessThan":"6.70\\(acgg.1\\)","versionType":"custom","status":"affected"}]},{"vendor":"zyxel","product":"usg_20w-vpn_firmware","defaultStatus":"unknown","cpes":

Added

SSVC

{"timestamp":"2024-03-01T05:01:04.429989Z","id":"CVE-2023-6398","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}

CVE Modified by Zyxel Corporation 6/17/2026 2:50:41 AM

Action

Type

Old Value

New Value

Added

Affected

[{"vendor":"Zyxel","product":"ATP series firmware","defaultStatus":"unaffected","versions":[{"version":"version 4.32 through 5.37 Patch 1","status":"affected"}]},{"vendor":"Zyxel","product":"USG FLEX series firmware","defaultStatus":"unaffected","versions":[{"version":"version 4.50 through 5.37 Patch 1","status":"affected"}]},{"vendor":"Zyxel","product":"USG FLEX 50(W) series firmware","defaultStatus":"unaffected","versions":[{"version":" version 4.16 through 5.37 Patch 1","status":"affected"}]},{"vendor":"Zyxel","product":"USG20(W)-VPN series firmware","defaultStatus":"unaffected","versions":[{"version":"version 4.16 through 5.37 Patch 1","status":"affected"}]},{"vendor":"Zyxel","product":" NWA50AX firmware","defaultStatus":"unaffected","versions":[{"version":"< 6.29(ABYW.4)","status":"affected"}]},{"vendor":"Zyxel","product":" WAC500 firmware","defaultStatus":"unaffected","versions":[{"version":"< 6.70(ABVS.1)","status":"affected"}]},{"vendor":"Zyxel","product":"WAX300H firmware","defaultStatus":"unaffected","versions":[{"version":"< 6.70(ACHF.1)","status":"affected"}]},{"vendor":"Zyxel","product":"WBE660S firmware","defaultStatus":"unaffected","versions":[{"version":"< 6.70(ACGG.1)","status":"affected"}]},{"vendor":"Zyxel","product":"USG FLEX H series firmware","defaultStatus":"unaffected","versions":[{"version":"version 1.10 through 1.10 Patch 1","status":"affected"}]}]

Initial Analysis by NIST 1/21/2025 1:36:54 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:atp100_firmware::::::::* versions from (including) 4.32 up to (excluding) 5.37 cpe:2.3:o:zyxel:atp100_firmware:5.37:-::::::* cpe:2.3:o:zyxel:atp100_firmware:5.37:patch1::::::* OR cpe:2.3:h:zyxel:atp100:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:atp100w_firmware::::::::* versions from (including) 4.32 up to (excluding) 5.37 cpe:2.3:o:zyxel:atp100w_firmware:5.37:-::::::* cpe:2.3:o:zyxel:atp100w_firmware:5.37:patch1::::::* OR cpe:2.3:h:zyxel:atp100w:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:atp200_firmware::::::::* versions from (including) 4.32 up to (excluding) 5.37 cpe:2.3:o:zyxel:atp200_firmware:5.37:-::::::* cpe:2.3:o:zyxel:atp200_firmware:5.37:patch1::::::* OR cpe:2.3:h:zyxel:atp200:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:atp500_firmware::::::::* versions from (including) 4.32 up to (excluding) 5.37 cpe:2.3:o:zyxel:atp500_firmware:5.37:-::::::* cpe:2.3:o:zyxel:atp500_firmware:5.37:patch1::::::* OR cpe:2.3:h:zyxel:atp500:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:atp700_firmware::::::::* versions from (including) 4.32 up to (excluding) 5.37 cpe:2.3:o:zyxel:atp700_firmware:5.37:-::::::* cpe:2.3:o:zyxel:atp700_firmware:5.37:patch1::::::* OR cpe:2.3:h:zyxel:atp700:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:atp800_firmware::::::::* versions from (including) 4.32 up to (excluding) 5.37 cpe:2.3:o:zyxel:atp800_firmware:5.37:-::::::* cpe:2.3:o:zyxel:atp800_firmware:5.37:patch1::::::* OR cpe:2.3:h:zyxel:atp800:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:nwa110ax_firmware::::::::* versions up to (excluding) 6.70\(abtg.2\) OR cpe:2.3:h:zyxel:nwa110ax:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:nwa1123acv3_firmware::::::::* versions up to (excluding) 6.70\(abvt.1\) OR cpe:2.3:h:zyxel:nwa1123acv3:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:nwa210ax_firmware::::::::* versions up to (excluding) 6.70\(abtd.2\) OR cpe:2.3:h:zyxel:nwa210ax:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:nwa220ax-6e_firmware::::::::* versions up to (excluding) 6.70\(acco.1\) OR cpe:2.3:h:zyxel:nwa220ax-6e:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:nwa50ax-pro_firmware::::::::* versions up to (excluding) 6.80\(acge.0\) OR cpe:2.3:h:zyxel:nwa50ax-pro:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:nwa50ax_firmware::::::::* versions up to (excluding) 6.29\(abyw.4\) OR cpe:2.3:h:zyxel:nwa50ax:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:nwa55axe_firmware::::::::* versions up to (excluding) 6.29\(abzl.4\) OR cpe:2.3:h:zyxel:nwa55axe:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:nwa90ax-pro_firmware::::::::* versions up to (excluding) 6.80\(acgf.0\) OR cpe:2.3:h:zyxel:nwa90ax-pro:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:nwa90ax_firmware::::::::* versions up to (excluding) 6.29\(accv.4\) OR cpe:2.3:h:zyxel:nwa90ax:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:uos:1.10:-::::::* cpe:2.3:o:zyxel:uos:1.10:patch1::::::* OR cpe:2.3:h:zyxel:usg_flex_100h:-:::::::* cpe:2.3:h:zyxel:usg_flex_100hp:-:::::::* cpe:2.3:h:zyxel:usg_flex_200h:-:::::::* cpe:2.3:h:zyxel:usg_flex_200hp:-:::::::* cpe:2.3:h:zyxel:usg_flex_500h:-:::::::* cpe:2.3:h:zyxel:usg_flex_700h:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg20-vpn_firmware::::::::* versions from (including) 4.16 up to (excluding) 5.37 cpe:2.3:o:zyxel:usg20-vpn_firmware:5.37:-::::::* cpe:2.3:o:zyxel:usg20-vpn_firmware:5.37:patch1::::::* OR cpe:2.3:h:zyxel:usg20-vpn:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg20w-vpn_firmware::::::::* versions from (including) 4.16 up to (excluding) 5.37 cpe:2.3:o:zyxel:usg20w-vpn_firmware:5.37:-::::::* cpe:2.3:o:zyxel:usg20w-vpn_firmware:5.37:patch1::::::* OR cpe:2.3:h:zyxel:usg20w-vpn:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg_flex_100_firmware::::::::* versions from (including) 4.50 up to (excluding) 5.37 cpe:2.3:o:zyxel:usg_flex_100_firmware:5.37:-::::::* cpe:2.3:o:zyxel:usg_flex_100_firmware:5.37:patch1::::::* OR cpe:2.3:h:zyxel:usg_flex_100:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg_flex_100ax_firmware::::::::* versions from (including) 4.50 up to (excluding) 5.37 cpe:2.3:o:zyxel:usg_flex_100ax_firmware:5.37:-::::::* cpe:2.3:o:zyxel:usg_flex_100ax_firmware:5.37:patch1::::::* OR cpe:2.3:h:zyxel:usg_flex_100ax:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg_flex_100h_firmware::::::::* versions from (including) 4.50 up to (excluding) 5.37 cpe:2.3:o:zyxel:usg_flex_100h_firmware:5.37:-::::::* cpe:2.3:o:zyxel:usg_flex_100h_firmware:5.37:patch1::::::* OR cpe:2.3:h:zyxel:usg_flex_100h:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg_flex_100w_firmware::::::::* versions from (including) 4.50 up to (excluding) 5.37 cpe:2.3:o:zyxel:usg_flex_100w_firmware:5.37:-::::::* cpe:2.3:o:zyxel:usg_flex_100w_firmware:5.37:patch1::::::* OR cpe:2.3:h:zyxel:usg_flex_100w:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg_flex_200_firmware::::::::* versions from (including) 4.50 up to (excluding) 5.37 cpe:2.3:o:zyxel:usg_flex_200_firmware:5.37:-::::::* cpe:2.3:o:zyxel:usg_flex_200_firmware:5.37:patch1::::::* OR cpe:2.3:h:zyxel:usg_flex_200:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg_flex_200h_firmware::::::::* versions from (including) 4.50 up to (excluding) 5.37 cpe:2.3:o:zyxel:usg_flex_200h_firmware:5.37:-::::::* cpe:2.3:o:zyxel:usg_flex_200h_firmware:5.37:patch1::::::* OR cpe:2.3:h:zyxel:usg_flex_200h:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg_flex_200hp_firmware::::::::* versions from (including) 4.50 up to (excluding) 5.37 cpe:2.3:o:zyxel:usg_flex_200hp_firmware:5.37:-::::::* cpe:2.3:o:zyxel:usg_flex_200hp_firmware:5.37:patch1::::::* OR cpe:2.3:h:zyxel:usg_flex_200hp:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg_flex_500_firmware::::::::* versions from (including) 4.50 up to (excluding) 5.37 cpe:2.3:o:zyxel:usg_flex_500_firmware:5.37:-::::::* cpe:2.3:o:zyxel:usg_flex_500_firmware:5.37:patch1::::::* OR cpe:2.3:h:zyxel:usg_flex_500:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg_flex_500h_firmware::::::::* versions from (including) 4.50 up to (excluding) 5.37 cpe:2.3:o:zyxel:usg_flex_500h_firmware:5.37:-::::::* cpe:2.3:o:zyxel:usg_flex_500h_firmware:5.37:patch1::::::* OR cpe:2.3:h:zyxel:usg_flex_500h:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg_flex_50_firmware::::::::* versions from (including) 4.16 up to (excluding) 5.37 cpe:2.3:o:zyxel:usg_flex_50_firmware:5.37:-::::::* cpe:2.3:o:zyxel:usg_flex_50_firmware:5.37:patch1::::::* OR cpe:2.3:h:zyxel:usg_flex_50:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg_flex_50w_firmware::::::::* versions from (including) 4.16 up to (excluding) 5.37 cpe:2.3:o:zyxel:usg_flex_50w_firmware:5.37:-::::::* cpe:2.3:o:zyxel:usg_flex_50w_firmware:5.37:patch1::::::* OR cpe:2.3:h:zyxel:usg_flex_50w:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg_flex_700_firmware::::::::* versions from (including) 4.50 up to (excluding) 5.37 cpe:2.3:o:zyxel:usg_flex_700_firmware:5.37:-::::::* cpe:2.3:o:zyxel:usg_flex_700_firmware:5.37:patch1::::::* OR cpe:2.3:h:zyxel:usg_flex_700:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg_flex_700h_firmware::::::::* versions from (including) 4.50 up to (excluding) 5.37 cpe:2.3:o:zyxel:usg_flex_700h_firmware:5.37:-::::::* cpe:2.3:o:zyxel:usg_flex_700h_firmware:5.37:patch1::::::* OR cpe:2.3:h:zyxel:usg_flex_700h:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:wac500_firmware::::::::* versions up to (excluding) 6.70\(abvs.1\) OR cpe:2.3:h:zyxel:wac500:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:wac500h_firmware::::::::* versions up to (excluding) 6.70\(abwa.1\) OR cpe:2.3:h:zyxel:wac500h:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:wax300h_firmware::::::::* versions up to (excluding) 6.70\(achf.1\) OR cpe:2.3:h:zyxel:wax300h:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:wax510d_firmware::::::::* versions up to (excluding) 6.70\(abtf.2\) OR cpe:2.3:h:zyxel:wax510d:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:wax610d_firmware::::::::* versions up to (excluding) 6.70\(abte.2\) OR cpe:2.3:h:zyxel:wax610d:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:wax620d-6e_firmware::::::::* versions up to (excluding) 6.70\(accn.1\) OR cpe:2.3:h:zyxel:wax620d-6e:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:wax630s_firmware::::::::* versions up to (excluding) 6.70\(abzd.2\) OR cpe:2.3:h:zyxel:wax630s:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:wax640s-6e_firmware::::::::* versions up to (excluding) 6.70\(accm.1\) OR cpe:2.3:h:zyxel:wax640s-6e:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:wax650s_firmware::::::::* versions up to (excluding) 6.70\(abrm.2\) OR cpe:2.3:h:zyxel:wax650s:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:wax655e_firmware::::::::* versions up to (excluding) 6.70\(acdo.1\) OR cpe:2.3:h:zyxel:wax655e:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:wbe660s_firmware::::::::* versions up to (excluding) 6.70\(acgg.2\) OR cpe:2.3:h:zyxel:wbe660s:-:::::::*
Changed	Reference Type	https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-aps-02-20-2024 No Types Assigned	https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-aps-02-20-2024 Vendor Advisory
Changed	Reference Type	https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-aps-02-20-2024 No Types Assigned	https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-aps-02-20-2024 Vendor Advisory

CVE Modified by Zyxel Corporation 2/21/2024 5:15:42 AM

Action

Type

Old Value

New Value

Changed

Description

A post-authentication command injection vulnerability in the file upload binary in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50(W) series firmware versions from 4.16 through 5.37 Patch 1, USG20(W)-VPN series firmware versions from 4.16 through 5.37 Patch 1, NWA50AX firmware versions through 6.29(ABYW.3), WAC500 firmware versions through 6.65(ABVS.1), WAX300H firmware versions through 6.60(ACHF.1), and WBE660S firmware versions through 6.65(ACGG.1) could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands on an affected device via FTP.

A post-authentication command injection vulnerability in the file upload binary in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50(W) series firmware versions from 4.16 through 5.37 Patch 1, USG20(W)-VPN series firmware versions from 4.16 through 5.37 Patch 1, 

USG FLEX H series firmware versions from 1.10 through 1.10 Patch 1,

NWA50AX firmware versions through 6.29(ABYW.3), WAC500 firmware versions through 6.65(ABVS.1), WAX300H firmware versions through 6.60(ACHF.1), and WBE660S firmware versions through 6.65(ACGG.1) could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands on an affected device via FTP.

CVE Modified by Zyxel Corporation 2/19/2024 10:15:07 PM

Action

Type

Old Value

New Value

Changed

Description

A post-authentication command injection vulnerability in the file upload binary in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50(W) series firmware versions from 4.16 through 5.37 Patch 1, USG20(W)-VPN series firmware versions from 4.16 through 5.37 Patch 1, NWA50AX firmware versions through 6.29(ABYW.3), WAC500 firmware versions through 6.65(ABVS.1), WAX300H firmware version 6.60(ACHF.1), and WBE660S firmware versions through 6.65(ACGG.1) could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands on an affected device via FTP.

A post-authentication command injection vulnerability in the file upload binary in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50(W) series firmware versions from 4.16 through 5.37 Patch 1, USG20(W)-VPN series firmware versions from 4.16 through 5.37 Patch 1, NWA50AX firmware versions through 6.29(ABYW.3), WAC500 firmware versions through 6.65(ABVS.1), WAX300H firmware versions through 6.60(ACHF.1), and WBE660S firmware versions through 6.65(ACGG.1) could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands on an affected device via FTP.

New CVE Received from Zyxel Corporation 2/19/2024 9:15:49 PM

Action	Type	New Value
Added	Description	A post-authentication command injection vulnerability in the file upload binary in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50(W) series firmware versions from 4.16 through 5.37 Patch 1, USG20(W)-VPN series firmware versions from 4.16 through 5.37 Patch 1, NWA50AX firmware versions through 6.29(ABYW.3), WAC500 firmware versions through 6.65(ABVS.1), WAX300H firmware version 6.60(ACHF.1), and WBE660S firmware versions through 6.65(ACGG.1) could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands on an affected device via FTP.
Added	CVSS V3.1	Zyxel Corporation AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Added	CWE	Zyxel Corporation CWE-78
Added	Reference	Zyxel Corporation https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-aps-02-20-2024 [No types assigned]

Quick Info

CVE Dictionary Entry:
CVE-2023-6398
NVD Published Date:
02/19/2024
NVD Last Modified:
06/17/2026
Source:
Zyxel Corporation

You are viewing this page in an unauthorized frame window.

Information Technology Laboratory

National Vulnerability Database

National Vulnerability Database

CVE-2023-6398 Detail

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Change History

CVE Modified by CISA-ADP 6/17/2026 2:50:41 AM

CVE Modified by Zyxel Corporation 6/17/2026 2:50:41 AM

Initial Analysis by NIST 1/21/2025 1:36:54 PM

CVE Modified by CVE 11/21/2024 3:43:46 AM

CVE Modified by Zyxel Corporation 5/14/2024 10:33:43 AM

CVE Modified by Zyxel Corporation 2/21/2024 5:15:42 AM

CVE Modified by Zyxel Corporation 2/19/2024 10:15:07 PM

New CVE Received from Zyxel Corporation 2/19/2024 9:15:49 PM

Quick Info