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CVE-2021-29976

CVSS v3.1 8.8 (High)
88% Progress
CVSS v2.0 6.8 (Medium)
68% Progress
EPSS 0.43 % (75th)
0.43% Progress
Affected Products 3
Advisories 31
Info CVSS EPSS Affected Configurations References Security Advisories Packages & Software OVAL Tools, Exploits & PoC Graph Web & Social Timeline

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.

Weaknesses
CWE-787
Out-of-bounds Write
CVE Status
PUBLISHED
CNA
Mozilla Corporation
Published Date
2021-08-05 20:15:08
(3 years ago)
Updated Date
2022-12-09 19:07:37
(21 months ago)

Affected Products

Mozilla

Configuration #1

    CPE23 From Up To
  Mozilla Firefox prior 90.0 version cpe:2.3:a:mozilla:firefox < 90.0
  Mozilla Firefox Esr prior 78.12 version cpe:2.3:a:mozilla:firefox_esr < 78.12
  Mozilla Thunderbird prior 78.12 version cpe:2.3:a:mozilla:thunderbird < 78.12