CVE-2023-6398
A post-authentication command injection vulnerability in the file upload binary in Zyxel ATP...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2023-6398- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-78
- Updated
- 2026-11-02
EUVDEUVD-2023-58635
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.
- Record
EUVD-2023-58635- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-p6jh-65c7-8r26
A post-authentication command injection vulnerability in the file upload binary in Zyxel ATP...
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.
- Record
GHSA-p6jh-65c7-8r26- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-78
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2023-6398- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-78
- Updated
- 2026-11-02
Affected products
- zyxel atp series firmware
- zyxel nwa50ax firmware
- zyxel usg flex 50(w) series firmware
- zyxel usg flex h series firmware
- zyxel usg flex series firmware
- zyxel usg20(w)-vpn series firmware
- zyxel wac500 firmware
- zyxel wax300h firmware
- zyxel wbe660s firmware
- zyxel atp100 firmware
- zyxel atp100w firmware
- zyxel atp200 firmware
Show 36 moreShow less
- zyxel atp500 firmware
- zyxel atp700 firmware
- zyxel atp800 firmware
- zyxel nwa110ax firmware
- zyxel nwa1123acv3 firmware
- zyxel nwa210ax firmware
- zyxel nwa220ax-6e firmware
- zyxel nwa50ax-pro firmware
- zyxel nwa55axe firmware
- zyxel nwa90ax-pro firmware
- zyxel nwa90ax firmware
- zyxel uos
- zyxel usg20-vpn firmware
- zyxel usg20w-vpn firmware
- zyxel usg 20w-vpn firmware
- zyxel usg flex 100 firmware
- zyxel usg flex 100ax firmware
- zyxel usg flex 100h firmware
- zyxel usg flex 100w firmware
- zyxel usg flex 200 firmware
- zyxel usg flex 200h firmware
- zyxel usg flex 200hp firmware
- zyxel usg flex 500 firmware
- zyxel usg flex 500h firmware
- zyxel usg flex 50 firmware
- zyxel usg flex 50w firmware
- zyxel usg flex 700 firmware
- zyxel usg flex 700h firmware
- zyxel wac500h firmware
- zyxel wax510d firmware
- zyxel wax610d firmware
- zyxel wax620d-6e firmware
- zyxel wax630s firmware
- zyxel wax640s-6e firmware
- zyxel wax650s firmware
- zyxel wax655e firmware
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-6398 is a high vulnerability (CVSS 7.2) in Zyxel Atp Series Firmware, published February 20, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.33%, the 71st percentile. No source names a fixed version.