CVE-2023-32213: Mozilla Firefox

High severity, CVSS 8.8. EPSS: 0.8% chance of exploitation in the next 30 days.

When reading a file, an uninitialized value could have been used as read limit. This vulnerability affects Firefox < 113, Firefox ESR < 102.11, and Thunderbird < 102.11.

Affected products

• Mozilla Firefox: before 113.0 (fixed in 113.0)
• Mozilla Firefox ESR: before 102.11 (fixed in 102.11)
• Mozilla Thunderbird: before 102.11 (fixed in 102.11)

Published 2023-06-02. Last modified 2026-06-17.