CVE-2021-38506

Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user

published December 8, 2021

CVSS
—
EPSS
2%
Percentile
74.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01507 · 74.2th percentile
Published
2021-12-08T21:21Z
EPSS history
Timeline
  • 08 DEC 21:21Z
    Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user
    cvelistv5