CVEvulnerability
CVE-2021-38498
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2021-11-03
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
- Weaknesses
- CWE-416
Description
During process shutdown, a document could have caused a use-after-free of a languages service object, leading to memory corruption and a potentially exploitable crash. 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)
Related
Weakness · CWE (1)
- CWE-416 Use After Free weakness
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1729642 Permissions Required, Vendor Advisory
- 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/show_bug.cgi?id=1729642 Permissions Required, Vendor Advisory
- 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