Vulnerability Database

309,364

Total vulnerabilities in the database

CVE-2025-5272

Memory safety bugs present in Firefox 138 and Thunderbird 138. 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 < 139 and Thunderbird < 139.

  • Published: May 27, 2025
  • Updated: Nov 16, 2025
  • CVE: CVE-2025-5272
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 7.3
  • AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CWEs:

Software From Fixed in
mozilla / firefox - 139.0
mozilla / thunderbird - 139.0