CVE-2021-29976
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.
- Affected products
- Alt Linux, Astra Linux, Centos, Firefox, Firefox Esr, Linuxmint, Red Hat, Rocky Linux
- Mozilla Firefox
- < 90.0
- Mozilla Firefox Esr
- < 78.12
- Mozilla Thunderbird
- < 78.12
- Fix
- Available
- CVSS 3.1
- 8.8 HIGH
- EPSS
- 1.2% (66th percentile)
- Weakness
- CWE-787
- NVD status
- Modified
- Published
- 2021-08-05
CVE-2021-29976 at NVD
No indexed exploits for CVE-2021-29976 yet
Our index is partial: it proves presence, never absence
No exploit for CVE-2021-29976 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.