CVE-2022-4428Network attack vector

Privilege escalation via unvalidated support URI

Published Jan 11, 2023 · Updated Apr 9, 2025

Improper input validation in Cloudflare WARP for Windows 2022.10.106.0 and earlier allows attackers to launch arbitrary executables. The client accepts the support_uri value from mdm.xml or an enrolled device profile without ensuring that it identifies a safe support destination. Exploitation requires local file-system access or authenticated Zero Trust configuration access and a user clicking Send feedback, after which the selected executable runs with elevated privileges.

CVSS severity8.9
High
EPSS probability0.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Cloudflare WARP for Windows 2022.10.106.0 and earlier allows attackers to launch arbitrary executables. The client accepts the support_uri value from mdm.xml or an enrolled device profile without ensuring that it identifies a safe support destination. Exploitation requires local file-system access or authenticated Zero Trust configuration access and a user clicking Send feedback, after which the selected executable runs with elevated privileges.

The record

CVE
CVE-2022-4428
Published
Jan 11, 2023
Updated
Apr 9, 2025
Vendor
Cloudflare
Product
Cloudflare WARP
Classifications
CWE-20, CAPEC-233, CAPEC-549, T1204.002
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 11, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 9, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2022.10.106.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Cloudflare · Cloudflare WARPversion=0 <=2022.10.106.0

Published CVSS scores

8.0NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
8.9CloudflareCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
CAPEC-233Privilege Escalation
CAPEC-549Local Execution of Code
T1204.002Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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