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 are unaffected.*<br>*Note*: Due to a clerical error this advisory was not included in the original announcement, and was added in Feburary 2022. This vulnerability affects Firefox < 92.
                
            Metrics
Affected Vendors & Products
References
        History
                    Tue, 15 Jul 2025 13:45:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| Metrics | epss 
 | epss 
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Wed, 16 Apr 2025 16:15:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| Weaknesses | CWE-1007 | |
| Metrics | ssvc 
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 MITRE
                        MITRE
                    Status: PUBLISHED
Assigner: mozilla
Published: 2022-12-22T00:00:00.000Z
Updated: 2025-04-16T15:49:45.732Z
Reserved: 2022-02-18T00:00:00.000Z
Link: CVE-2021-4221
 Vulnrichment
                        Vulnrichment
                    Updated: 2024-08-03T17:16:04.358Z
 NVD
                        NVD
                    Status : Modified
Published: 2022-12-22T20:15:12.337
Modified: 2025-04-16T16:15:19.290
Link: CVE-2021-4221
 Redhat
                        Redhat
                    No data.