What is CVE-2021-4221?

CVE-2021-4221 is a medium-severity vulnerability in Google Android, classified under CWE-1007. CVSS score: 4.3/10. Published 2022-12-22.

How severe is CVE-2021-4221?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Google Android

CVE-2021-4221

If a domain name contained a RTL character, it would cause the domain to be rendered to the right of the path. This could lead to user confusion and spoofing attacks. <br>*This bug only affects Firefox for Android. Other operating systems…

EPSS: 0.004 (33.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

Affected products

Google Android
Mozilla Firefox — versions unspecified

Weakness classification (CWE)

CWE-1007

References

security@mozilla.org (Vendor Advisory)
security@mozilla.org (Exploit, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2021-4221?: CVE-2021-4221 is a medium-severity vulnerability in Google Android, classified under CWE-1007. CVSS score: 4.3/10. Published 2022-12-22.
How severe is CVE-2021-4221?: Medium severity. CVSS v3 base score is 4.3 out of 10.