CVE-2024-6609: Mozilla Firefox

High severity, CVSS 8.8. EPSS: 0.6% chance of exploitation in the next 30 days.

When almost out-of-memory an elliptic curve key which was never allocated could have been freed again. This vulnerability affects Firefox < 128 and Thunderbird < 128.

Affected products

• Mozilla Firefox: before 128.0 (fixed in 128.0)
• Mozilla Thunderbird: before 128.0 (fixed in 128.0)

Published 2024-07-09. Last modified 2026-06-17.