CVE-2021-23964
Mozilla developers reported memory safety bugs present in Firefox 84 and Firefox ESR 78.6. 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 < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.
- Affected products
- Alt Linux, Astra Linux, Centos, Firefox, Firefox Esr, Linuxmint, Red Hat, Suse
- Mozilla Firefox
- < 85.0
- Mozilla Firefox Esr
- < 78.7
- Mozilla Thunderbird
- < 78.7
- Fix
- Available
- CVSS 3.1
- 8.8 HIGH
- EPSS
- 1.3% (67th percentile)
- Weakness
- CWE-787
- NVD status
- Modified
- Published
- 2021-02-26
CVE-2021-23964 at NVD
No indexed exploits for CVE-2021-23964 yet
Our index is partial: it proves presence, never absence
No exploit for CVE-2021-23964 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.