CVE-2021-4129
Mozilla developers and community members Julian Hector, Randell Jesup, Gabriele Svelto, Tyson Smith, Christian Holler, and Masayuki Nakano reported memory safety bugs present in Firefox 94. 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 < 95, Firefox ESR < 91.4.0, and Thunderbird < 91.4.0.
- Affected products
- Alt Linux, Astra Linux, Centos, Firefox, Firefox Esr, Linuxmint, Red Hat, Rocky Linux
- Mozilla Firefox
- < 95.0
- Mozilla Firefox Esr
- < 91.4.0
- Mozilla Thunderbird
- < 91.4.0
- Fix
- Available
- CVSS 3.1
- 9.8 CRITICAL
- EPSS
- 1.0% (60th percentile)
- Weakness
- CWE-787
- NVD status
- Modified
- Published
- 2022-12-22
CVE-2021-4129 at NVD
No indexed exploits for CVE-2021-4129 yet
Our index is partial: it proves presence, never absence
No exploit for CVE-2021-4129 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.