CVE-2025-1018CWE-1021

CVE-2025-1018

Medium · published February 4, 2025

CVSS v3.1

5.3

EPSS

Percentile

34.8

In the wild

Unconfirmed

What it is

The fullscreen notification is prematurely hidden when fullscreen is re-requested quickly by the user. This could have been leveraged to perform a potential spoofing attack. This vulnerability was fixed in Firefox 135 and Thunderbird 135.

The record

Technical detail

CVSS v3.1: 5.3 · MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0: Not supplied
EPSS: 0.00416 · 34.8th percentile
Weakness: CWE-1021 · Improper Restriction of Rendered UI Layers or Frames
Published: 2025-02-04T19:15Z

Affected products (2)

Product	Versions	Fixed in
mozilla/firefox	< 135.0	135.0
mozilla/thunderbird	≥ 131.0, < 135.0	135.0

References (3)

https://bugzilla.mozilla.org/show_bug.cgi?id=1910818 · [email protected]https://www.mozilla.org/security/advisories/mfsa2025-07/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2025-11/ · [email protected]

EPSS history

Timeline

04 FEB 13:58Z
Fullscreen notification is not displayed when fullscreen is re-requested
cvelistv5