CVE-2021-29976

Mozilla developers reported memory safety bugs present in code shared between Firefox and Thunderbird

published August 5, 2021

CVSS
—
EPSS
1%
Percentile
68.6
In the wild
Unconfirmed
What it is

Mozilla developers reported memory safety bugs present in code shared between Firefox and Thunderbird. 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 Thunderbird < 78.12, Firefox ESR < 78.12, and Firefox < 90.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01223 · 68.6th percentile
Published
2021-08-05T19:46Z
EPSS history
Timeline
  • 05 AUG 19:46Z
    Mozilla developers reported memory safety bugs present in code shared between Firefox and Thunderbird
    cvelistv5