CVE-2022-4428
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedsupport_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).
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceThe WARP client's mdm.xml configuration file does not properly validate the support_uri parameter, allowing an attacker with local file system access to inject a malicious path. When users click 'Send feedback', the vulnerable code executes the arbitrary executable specified in the crafted XML, enabling local privilege escalation.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data<= 2022.10.106.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Check installed Cloudflare Warp versionRun 'warp-diag --version' or check the application version through the installed package (e.g., via 'dpkg -l', 'rpm -qi', or the Windows Add/Remove Programs list)Affected if The installed version is 2022.10.106.0 or earlier (any version <= 2022.10.106.0)
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Locate mdm.xml configuration filesSearch for mdm.xml files on the system, typically found in installation directories or configuration folders such as C:\Program Files\Cloudflare\ or /Applications/Cloudflare WARP.app/ on macOSAffected if An mdm.xml file exists on the system and is being used by the Warp client
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Inspect support_uri parameter in mdm.xmlOpen the mdm.xml file and examine the support_uri field - look for paths that point to locations outside the expected installation directory or to unexpected executablesAffected if The support_uri parameter contains a path to an executable that is not in the trusted Cloudflare installation directory or points to an unrecognized location
A system is affected if Cloudflare Warp version is 2022.10.106.0 or earlier AND an mdm.xml file with a suspicious support_uri parameter exists and the user interacts with the Send Feedback feature.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataImplement strict validation and sanitization of the support_uri parameter, including path whitelisting, verification that executables are from trusted locations, and potentially code signing verification before execution.
- Consultation2.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-4428 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2022-4428 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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