Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2021-43542

Using XMLHttpRequest, an attacker could have identified installed applications by probing error messages for loading external protocols. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 61.1%
CVSS Severity
CVSS v3 Score 6.5
CVSS v2 Score 4.3
References
Products affected by CVE-2021-43542


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