CVEvulnerability
CVE-2021-29952
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2021-06-24
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 5.1 MEDIUM — AV:N/AC:H/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-362
Description
When Web Render components were destructed, a race condition could have caused undefined behavior, and we presume that with enough effort may have been exploitable to run arbitrary code. This vulnerability affects Firefox < 88.0.1 and Firefox for Android < 88.1.3.
Affected configurations
• mozilla firefox (< 88.0.1)
• mozilla firefox (< 88.1.3)
Related
Weakness · CWE (1)
- CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization weakness
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1704227 Permissions Required, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-20/ Release Notes, Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1704227 Permissions Required, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-20/ Release Notes, Vendor Advisory