Description
Mozilla Developer Nicolas Silva found that when using WebRender, Firefox would under certain conditions leak arbitrary GPU memory to the visible screen. The leaked memory content was visible to the user, but not observable from web content. This vulnerability affects Firefox < 77.
References (2)
Core 2
Core References
Vendor Advisory x_refsource_misc
https://www.mozilla.org/security/advisories/mfsa2020-20/
Issue Tracking, Permissions Required, Vendor Advisory x_refsource_misc
https://bugzilla.mozilla.org/show_bug.cgi?id=1637112
Scores
CVSS v3
6.5
EPSS
0.0032
EPSS Percentile
55.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Details
CWE
CWE-125
Status
published
Products (1)
mozilla/firefox
< 77.0
Published
Jul 09, 2020
Tracked Since
Feb 18, 2026