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CVE-2021-43533

Date: December 8, 2021

When parsing internationalized domain names, high bits of the characters in the URLs were sometimes stripped, resulting in inconsistencies that could lead to user confusion or attacks such as phishing. This vulnerability affects Firefox < 94.

Severity Score

Related Resources (5)

https://people.canonical.com/~ubuntu-security/cve/CVE-2021-43533
https://nvd.nist.gov/vuln/detail/CVE-2021-43533
https://bugzilla.mozilla.org/show_bug.cgi?id=1724233
https://www.mozilla.org/security/advisories/mfsa2021-48/
https://www.mend.io/vulnerability-database/CVE-2021-43533

Severity Score

Weakness Type (CWE)

Insufficient Information

NVD-CWE-noinfo

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): LOW
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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