CVE-2021-38493

Mozilla developers reported memory safety bugs present in Firefox 91 and Firefox ESR 78.13

published November 3, 2021

CVSS
—
EPSS
1%
Percentile
69.1
In the wild
Unconfirmed
What it is

Mozilla developers reported memory safety bugs present in Firefox 91 and Firefox ESR 78.13. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.14, Thunderbird < 78.14, and Firefox < 92.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01245 · 69.1th percentile
Published
2021-11-03T00:03Z
EPSS history
Timeline
  • 03 NOV 00:03Z
    Mozilla developers reported memory safety bugs present in Firefox 91 and Firefox ESR 78.13
    cvelistv5