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CVE-2022-0734

MEDIUM
6.1
CVSS Score
Published: May 24, 2022 at 02:10 AM UTC
Updated: June 17, 2026 at 04:21 AM UTC
69 products affected across 1 vendorUsg Flex 100W FirmwareUSG FLEX 200 firmwareUSG FLEX 700 firmware

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Severity
MEDIUM6.1
Exploit prediction
EPSS 9%

Description

A cross-site scripting vulnerability was identified in the CGI program of Zyxel USG/ZyWALL series firmware versions 4.35 through 4.70, USG FLEX series firmware versions 4.50 through 5.20, ATP series firmware versions 4.35 through 5.20, and VPN series firmware versions 4.35 through 5.20, that could allow an attacker to obtain some information stored in the user's browser, such as cookies or session tokens, via a malicious script.

Affected

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

ATP100 Firmware· Zyxel
95%
4.35 ≤ v ≤ 5.20
ATP100W Firmware· Zyxel
95%
4.35 ≤ v ≤ 5.20
zyxel-atp100w (same device)
ATP200 Firmware· Zyxel
95%
4.35 ≤ v ≤ 5.20
zyxel-atp200 (same device)
ATP500 Firmware· Zyxel
95%
4.35 ≤ v ≤ 5.20
zyxel-atp500 (same device)
ATP700 Firmware· Zyxel
95%
4.35 ≤ v ≤ 5.20
zyxel-atp700 (same device)
ATP800 Firmware· Zyxel
95%
4.35 ≤ v ≤ 5.20
zyxel-atp800 (same device)
Usg 20W Firmware· Zyxel
95%
4.35 ≤ v ≤ 4.70
zyxel-usg-20w (same device)
Usg 20W VPN Firmware· Zyxel
95%
4.35 ≤ v ≤ 4.70
Usg 2200-vpn Firmware· Zyxel
95%
4.35 ≤ v ≤ 4.70
zyxel-usg-2200-vpn (same device)
Usg Flex 100 Firmware· Zyxel
95%
4.50 ≤ v ≤ 5.20
zyxel-usg-flex-100 (same device)

Remediation

No guide yet

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

Patch and advisory references

References (1)

x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://www.zyxel.com/support/multiple-vulnerabilities-of-firewalls-AP-controllers-and-APs.shtml

CVSS

6.1MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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