Vulnerability Database

309,961

Total vulnerabilities in the database

CVE-2025-11721

Memory safety bug present in Firefox 143 and Thunderbird 143. This bug showed evidence of memory corruption and we presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox < 144 and Thunderbird < 144.

  • Published: Oct 14, 2025
  • Updated: Nov 17, 2025
  • CVE: CVE-2025-11721
  • Severity: Critical
  • Exploit:

CVSS v3:

  • Severity: Critical
  • Score: 9.8
  • AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWEs:

Software From Fixed in
mozilla / firefox 143.0 144.0
mozilla / thunderbird 143.0 144.0