8.9

CVE-2022-4428: cloudflare warp Improper Input Validation

CVSS: 8.9v3.1HighModified
Published 11-01-2023Last modified 09-04-2025
Open JSON

Vulnerability summary

CVE-2022-4428 is a high (CVSS 8.9) Improper Input Validation vulnerability in cloudflare warp. EPSS estimates a 0.69% chance of exploitation in the next 30 days, higher than 52.1% of scored vulnerabilities.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.9/10
010
High · v3.1 (CVE.org)
EPSS score
0.69%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 11-01-2023
    PublishedVulnerability first disclosed.
  2. 09-04-2025
    Last modifiedVulnerability information updated.

Description

support_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).

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.69%

Chance of exploitation in the next 30 days

Percentile

52%

Versus all other CVEs

30-day change

0.00 pp

From 0.69% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.69%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Cloudflare1 product
  • warp≤ 2022.10.106.0

1 vendor · 1 product

References

1 links