CVE-2020-12407

MEDIUM 6.5CVE-2020-12407 · Published 09/07/2020 · updated 17/06/2026

In short

CVE-2020-12407 is a MEDIUM (CVSS 6.5) vulnerability affecting firefox (mozilla).
Chance of exploitation in the next 30 days (EPSS): 0.97%, higher than 62.2% of all vulnerabilities.
Fix: update to 77.0 or later.

Package	Affected versions	Patched versions
firefox mozilla	`< 77.0`	`77.0`

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

bugzilla.mozilla.org/show_bug.cgi · Issue Tracking
mozilla.org/security/advisories/mfsa2020-20 · Vendor Advisory

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Package

Affected versions

Patched versions

firefox

mozilla

< 77.0

77.0

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