Cloudlfare WARP Arbitrary File Overwrite

published 2022-06-28 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-34430

cvss: 5.8; 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 23%
public exploits: 0; none known

Cloudflare WARP client for Windows (up to v. 2022.5.309.0) allowed creation of mount points from its ProgramData folder. During installation of the WARP client, it was possible to escalate privileges and overwrite SYSTEM protected files.

Patch / fix

fixed in 1

Cloudflare WARP 2022.5.309.0

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.8	CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:L/I:H/A:H
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	7.2	AV:L/AC:L/Au:N/C:C/I:C/A:C

Affected products

Cloudflare WARP

Classification

Weakness

CWE-20 Improper Input Validation
CWE-59 Improper Link Resolution Before File Access

References

github.com /cloudflare/advisories/security/advisories/GHSA-6fpc-qxmr-6wrq
release-notes, third-party-advisory

Sources

CVE List CVE-2022-2145
NVD CVE-2022-2145

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary