medium
6.5
CWE
22
Advisory Published
Updated

CVE-2022-2030: Path Traversal

First published: Tue Jul 19 2022(Updated: )

A directory traversal vulnerability caused by specific character sequences within an improperly sanitized URL was identified in some CGI programs of Zyxel USG FLEX 100(W) firmware versions 4.50 through 5.30, USG FLEX 200 firmware versions 4.50 through 5.30, USG FLEX 500 firmware versions 4.50 through 5.30, USG FLEX 700 firmware versions 4.50 through 5.30, USG FLEX 50(W) firmware versions 4.16 through 5.30, USG20(W)-VPN firmware versions 4.16 through 5.30, ATP series firmware versions 4.32 through 5.30, VPN series firmware versions 4.30 through 5.30, USG/ZyWALL series firmware versions 4.11 through 4.72, that could allow an authenticated attacker to access some restricted files on a vulnerable device.

Credit: security@zyxel.com.tw

Affected SoftwareAffected VersionHow to fix
Zyxel Usg Flex 100w Firmware>=4.50<=5.30
Zyxel Usg Flex 100w
Zyxel Usg Flex 200 Firmware>=4.50<=5.30
Zyxel Usg Flex 200
Zyxel Usg Flex 500 Firmware>=4.50<=5.30
Zyxel Usg Flex 500
Zyxel Usg Flex 700 Firmware>=4.50<=5.30
Zyxel Usg Flex 700
Zyxel Usg Flex 50w Firmware>=4.20<=5.30
Zyxel Usg Flex 50w
Zyxel Usg20w-vpn Firmware>=4.20<=5.30
Zyxel Usg20w-vpn
Zyxel Atp800 Firmware>=4.32<=5.30
Zyxel Atp800
Zyxel Atp700 Firmware>=4.32<=5.30
Zyxel Atp700
Zyxel Atp500 Firmware>=4.32<=5.30
Zyxel Atp500
Zyxel Atp200 Firmware>=4.32<=5.30
Zyxel ATP200
Zyxel Atp100w Firmware>=4.32<=5.30
Zyxel Atp100w
Zyxel Multiple Network-Attached Storage (NAS) Devices>=4.32<=5.30
Zyxel Multiple Network-Attached Storage (NAS) Devices
Zyxel Multiple Network-Attached Storage (NAS) Devices>=4.30<=5.30
Zyxel Multiple Network-Attached Storage (NAS) Devices
Zyxel Vpn300 Firmware>=4.30<=5.30
Zyxel Vpn300
Zyxel Vpn100 Firmware>=4.30<=5.30
Zyxel Vpn100
Zyxel Vpn50 Firmware>=4.30<=5.30
Zyxel Vpn50
Zyxel Usg20-vpn Firmware>=4.30<=5.30
Zyxel Usg20-vpn
Zyxel Usg 2200-vpn Firmware>=4.30<=5.30
Zyxel Usg 2200-vpn
Zyxel Zywall 110 Firmware>=4.30<=5.30
Zyxel Zywall 110
Zyxel Zywall 310 Firmware>=4.30<=5.30
Zyxel Zywall 310
Zyxel Zywall 1100 Firmware>=4.30<=5.30
Zyxel Zywall 1100
Zyxel Usg40 Firmware>=4.20<=4.72
Zyxel Usg40
Zyxel Usg40w Firmware>=4.20<=4.72
Zyxel Usg40w
Zyxel Usg60 Firmware>=4.20<=4.72
Zyxel Usg60
Zyxel Usg60w Firmware>=4.20<=4.72
Zyxel Usg60w

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Reference Links

Frequently Asked Questions

  • What is CVE-2022-2030?

    CVE-2022-2030 is a directory traversal vulnerability caused by specific character sequences within an improperly sanitized URL in Zyxel USG FLEX and other affected firmware versions.

  • How severe is CVE-2022-2030?

    CVE-2022-2030 has a severity value of 6.5, which is considered medium severity.

  • Which software versions are affected by CVE-2022-2030?

    Zyxel USG FLEX 100(W) firmware versions 4.50 through 5.30, USG FLEX 200 firmware versions 4.50 through 5.30, and USG FLEX 500 firmware versions 4.50 through 5.30 are affected by CVE-2022-2030.

  • How can I fix CVE-2022-2030?

    To fix CVE-2022-2030, it is recommended to update your affected Zyxel USG FLEX firmware versions to 5.40 or higher.

  • Where can I find more information about CVE-2022-2030?

    You can find more information about CVE-2022-2030 in the Zyxel security advisory on their official website.

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