CVE-2025-1019

MEDIUM 4.3

Fullscreen notification not properly displayed

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

The z-order of the browser windows could be manipulated to hide the fullscreen notification. This could potentially be leveraged to perform a spoofing attack. This vulnerability was fixed in Firefox 135 and Thunderbird 135.

Vendor	mozilla
Product	firefox
Ecosystems	Browser JavaScript
Industries	Technology
Published	Feb 4, 2025
Last Updated	Apr 13, 2026

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Affected Versions

Mozilla / Firefox

All versions affected

Mozilla / Thunderbird

All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗

bugzilla.mozilla.org: https://bugzilla.mozilla.org/show_bug.cgi?id=1940162 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-07/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-11/

Credits

Irvan Kurniawan