# CVE-2020-35152: Privilege escalation through unquoted service binary path on Cloudflare WARP for Windows

> A local attacker can escalate privileges to administrator by exploiting an unquoted service path in the Cloudflare WARP Windows client.

- **Severity:** Medium 4.5 (`CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Feb 2021
- **Updated:** 16 Sep 2024

## What is CVE-2020-35152?

CVE-2020-35152 is a medium-severity vulnerability in Cloudflare WARP for Windows, published on 2 Feb 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Cloudflare WARP for Windows allows privilege escalation due to an unquoted service path. A malicious user or process running with non-administrative privileges can become an administrator by abusing the unquoted service path issue. Since version 1.2.2695.1, the vulnerability was fixed by adding quotes around the service's binary path. This issue affects Cloudflare WARP for Windows, versions prior to 1.2.2695.1.

Weakness: CWE-428 (Unquoted Search Path or Element)

## Which versions are affected by CVE-2020-35152?

It affects 1 product.


Products: Cloudflare Warp.

## How do I fix CVE-2020-35152?

No fix has been published for CVE-2020-35152 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-35152 being exploited?

There is no known exploitation of CVE-2020-35152 in the wild and no public exploit code.

## Other vulnerabilities in Cloudflare WARP for Windows

- [CVE-2022-4428](https://insights.sbomify.com/CVE-2022-4428/): support_uri validation missing in WARP client for Windows (high 8.9)
- [CVE-2022-2225](https://insights.sbomify.com/CVE-2022-2225/): Zero Trust Secure Web Gateway policies bypass using WARP client subcommands (high 8.1)
- [CVE-2023-2754](https://insights.sbomify.com/CVE-2023-2754/): Plaintext transmission of DNS requests in Windows 1.1.1.1 WARP client (high 7.4)
- [CVE-2023-1862](https://insights.sbomify.com/CVE-2023-1862/): Remote access to warp-svc.exe in Cloudflare WARP (high 7.3)
- [CVE-2023-0652](https://insights.sbomify.com/CVE-2023-0652/): Local Privilege Escalation in Cloudflare WARP Installer (Windows) (high 7.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-35152 and fix it if it is affected.

What it is: CVE-2020-35152 is a medium-severity vulnerability in Cloudflare WARP for Windows, published on 2 Feb 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-35152 in the wild and no public exploit code.

Affected product: Cloudflare WARP for Windows. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2020-35152/ (Markdown: https://insights.sbomify.com/CVE-2020-35152/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-35152
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-35152
- OSV: https://osv.dev/vulnerability/CVE-2020-35152

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-35152/
Summaries are generated and may contain mistakes; the official description above is the record.