CVE-2022-2030

MEDIUM
6.5
CVSS Score
Published: July 19, 2022 at 05:55 AM UTC
Updated: June 17, 2026 at 04:41 AM UTC
56 products affected across 1 vendorUsg Flex 100W FirmwareUSG FLEX 200 firmwareUSG FLEX 700 firmware

Using USG FLEX 100(W) firmware by Zyxel?

Get instant alerts when new vulnerabilities affect USG FLEX 100(W) firmware - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM6.5
Exploit prediction
EPSS 1%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

4.32 ≤ v ≤ 5.30
4.32 ≤ v ≤ 5.30
zyxel-atp100w (same device)
4.32 ≤ v ≤ 5.30
zyxel-atp200 (same device)
4.32 ≤ v ≤ 5.30
zyxel-atp500 (same device)
4.32 ≤ v ≤ 5.30
zyxel-atp700 (same device)
4.32 ≤ v ≤ 5.30
zyxel-atp800 (same device)
4.20 ≤ v ≤ 5.30
4.30 ≤ v ≤ 5.30
zyxel-usg-2200-vpn (same device)
4.50 ≤ v ≤ 5.30
zyxel-usg-flex-100w (same device)
v ≤ 5.304.50 ≤ v ≤ 5.30
zyxel-usg-flex-200 (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

6.5MEDIUMZyxel
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-22

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card