CVE-2021-38506

CVE-2021-38506: vulnerability in Mozilla Firefox

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3Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackepss 1.5%
Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to spoofing attacks on the browser UI including phishing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.
Affected products
Mozilla · FirefoxMozilla · Firefox ESRMozilla · Thunderbird
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