CVEvulnerability
CVE-2021-38501
8.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2021-11-03
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 6.8 MEDIUM — AV:N/AC:M/Au:N/C:P/I:P/A:P
Description
Mozilla developers reported memory safety bugs present in Firefox 92 and Firefox ESR 91.1. 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 < 93, Thunderbird < 91.2, and Firefox ESR < 91.2.
Affected configurations
• mozilla firefox (< 93.0)
• mozilla firefox esr (< 91.2)
• mozilla thunderbird (< 91.2)
References
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1685354%2C1715755%2C1723176 Broken Link
- https://www.mozilla.org/security/advisories/mfsa2021-43/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-45/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-47/ Vendor Advisory
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1685354%2C1715755%2C1723176 Broken Link
- https://www.mozilla.org/security/advisories/mfsa2021-43/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-45/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-47/ Vendor Advisory