medium
6.1
CWE
79
Advisory Published
Updated

CVE-2022-40603: XSS

First published: Tue Dec 06 2022(Updated: )

A cross-site scripting (XSS) vulnerability in the CGI program of Zyxel ZyWALL/USG series firmware versions 4.30 through 4.72, VPN series firmware versions 4.30 through 5.31, USG FLEX series firmware versions 4.50 through 5.31, and ATP series firmware versions 4.32 through 5.31, which could allow an attacker to trick a user into visiting a crafted URL with the XSS payload. Then, the attacker could gain access to some browser-based information if the malicious script is executed on the victim’s browser.

Credit: security@zyxel.com.tw

Affected SoftwareAffected VersionHow to fix
Zyxel Atp800 Firmware>=4.32<=5.31
Zyxel Atp800
Zyxel Atp700 Firmware>=4.32<=5.31
Zyxel Atp700
Zyxel Atp500 Firmware>=4.32<=5.31
Zyxel Atp500
Zyxel Atp200 Firmware>=4.32<=5.31
Zyxel ATP200
Zyxel Multiple Network-Attached Storage (NAS) Devices>=4.32<=5.31
Zyxel Multiple Network-Attached Storage (NAS) Devices
Zyxel Atp100w Firmware>=4.32<=5.31
Zyxel Atp100w
Zyxel Usg Flex 100w Firmware>=4.50<=5.31
Zyxel Usg Flex 100w
Zyxel Usg Flex 200 Firmware>=4.50<=5.31
Zyxel Usg Flex 200
Zyxel Usg Flex 500 Firmware>=4.50<=5.31
Zyxel Usg Flex 500
Zyxel Usg Flex 700 Firmware>=4.50<=5.31
Zyxel Usg Flex 700
Zyxel Usg Flex 50w Firmware>=4.50<=5.31
Zyxel Usg Flex 50w
Zyxel Multiple Network-Attached Storage (NAS) Devices>=4.30<=5.31
Zyxel Multiple Network-Attached Storage (NAS) Devices
Zyxel Vpn300 Firmware>=4.30<=5.31
Zyxel Vpn300
Zyxel Vpn100 Firmware>=4.30<=5.31
Zyxel Vpn100
Zyxel Vpn50 Firmware>=4.30<=5.31
Zyxel Vpn50
Zyxel Usg40 Firmware>=4.30<=4.72
Zyxel Usg40
Zyxel Usg40w Firmware>=4.30<=4.72
Zyxel Usg40w
Zyxel Usg60 Firmware>=4.30<=4.72
Zyxel Usg60
Zyxel Usg60w Firmware>=4.30<=4.72
Zyxel Usg60w

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Reference Links

Frequently Asked Questions

  • What is CVE-2022-40603?

    CVE-2022-40603 is a cross-site scripting (XSS) vulnerability in the CGI program of Zyxel ZyWALL/USG series firmware.

  • Which Zyxel products are affected by CVE-2022-40603?

    Zyxel ZyWALL/USG series firmware versions 4.30 through 4.72, VPN series firmware versions 4.30 through 5.31, USG FLEX series firmware versions 4.50 through 5.31, and ATP series firmware versions 4.32 through 5.31 are affected.

  • What is the severity of CVE-2022-40603?

    CVE-2022-40603 has a severity level of 6.1 (medium).

  • How can I fix CVE-2022-40603?

    Update the affected firmware versions to the latest ones provided by Zyxel.

  • Where can I find more information about CVE-2022-40603?

    You can find more information about CVE-2022-40603 on Zyxel's official security advisories page: https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-xss-vulnerability-in-firewalls

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