CVE-2021-29976

Source
https://nvd.nist.gov/vuln/detail/CVE-2021-29976
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-29976.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-29976
Downstream
Related
Published
2021-08-05T20:15:08Z
Modified
2025-08-09T20:01:27Z
Severity
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages