CVE-2022-4428 HIGH

CVE-2022-4428: support_uri validation missing in WARP client for Windows

Vendor Cloudflare
Product WARP
Weakness CWE-20 · Input validation
Published January 11, 2023
Last update April 9, 2025

CVSS base score

8.9/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L

What the vulnerability does

01Description

support_uri parameter in the WARP client local settings file (mdm.xml) lacked proper validation which allowed for privilege escalation and launching an arbitrary executable on the local machine upon clicking on the "Send feedback" option. An attacker with access to the local file system could use a crafted XML config file pointing to a malicious file or set a local path to the executable using Cloudflare Zero Trust Dashboard (for Zero Trust enrolled clients).

Key dates

02Disclosure timeline

January 11, 2023 CVE published
April 9, 2025 Record updated