CVE-2022-2030
MEDIUMZyxel USG FLEX/ATP/VPN Series Firmware - Authenticated Path Traversal via URL Parameter
Title source: llmDescription
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.
References (1)
Core 1
Core References
Vendor Advisory x_refsource_confirm
https://www.zyxel.com/support/Zyxel-security-advisory-authenticated-directory-traversal-vulnerabilities-of-firewalls.shtml
Scores
CVSS v3
6.5
EPSS
0.0126
EPSS Percentile
79.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Details
CWE
CWE-22
Status
published
Products (25)
zyxel/atp100_firmware
4.32 - 5.30
zyxel/atp100w_firmware
4.32 - 5.30
zyxel/atp200_firmware
4.32 - 5.30
zyxel/atp500_firmware
4.32 - 5.30
zyxel/atp700_firmware
4.32 - 5.30
zyxel/atp800_firmware
4.32 - 5.30
zyxel/usg20-vpn_firmware
4.30 - 5.30
zyxel/usg20w-vpn_firmware
4.20 - 5.30
zyxel/usg40_firmware
4.20 - 4.72
zyxel/usg40w_firmware
4.20 - 4.72
... and 15 more
Published
Jul 19, 2022
Tracked Since
Feb 18, 2026