Privilege escalation through unquoted service binary path on Cloudflare WARP for Windows

published 2021-02-02 5y ago modified 2026-06-17 4mo ago also EUVD-2020-22840

cvss: 4.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 20%
public exploits: 0; none known

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.

Patch / fix

fixed in 1

Cloudflare Cloudflare WARP for Windows 1.2.2695.1

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Exploit prediction

0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	4.5	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	4.6	AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected products

Cloudflare Cloudflare WARP for Windows

Classification

Weakness

CWE-428 Unquoted Search Path or Element

References

github.com /cloudflare/advisories/security/advisories/GHSA-qc57-v5q8-f22h
third-party-advisory

Sources

CVE List CVE-2020-35152
NVD CVE-2020-35152

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