CVEvulnerability
CVE-2021-29970
8.8 HIGH
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- Status
- Modified
- Published
- 2021-08-05
- 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])
- 5.1 MEDIUM — AV:N/AC:H/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-416, CWE-787
Description
A malicious webpage could have triggered a use-after-free, memory corruption, and a potentially exploitable crash. *This bug could only be triggered when accessibility was enabled.*. This vulnerability affects Thunderbird < 78.12, Firefox ESR < 78.12, and Firefox < 90.
Affected configurations
• mozilla firefox (< 90.0)
• mozilla firefox esr (< 78.12)
• mozilla thunderbird (< 78.12)
Related
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1709976 Exploit, Issue Tracking, Vendor Advisory
- https://security.gentoo.org/glsa/202202-03 Third Party Advisory
- https://security.gentoo.org/glsa/202208-14 Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-28/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-29/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-30/ Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1709976 Exploit, Issue Tracking, Vendor Advisory
- https://security.gentoo.org/glsa/202202-03 Third Party Advisory
- https://security.gentoo.org/glsa/202208-14 Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-28/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-29/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-30/ Vendor Advisory