CVE-2019-11750: Mozilla Firefox

Medium severity, CVSS 6.5. EPSS: 1.3% chance of exploitation in the next 30 days.

A type confusion vulnerability exists in Spidermonkey, which results in a non-exploitable crash. This vulnerability affects Firefox < 69 and Firefox ESR < 68.1.

Affected products

• Mozilla Firefox: before 69.0 (fixed in 69.0)
• Mozilla Firefox ESR: before 68.1.0 (fixed in 68.1.0)

Published 2019-09-27. Last modified 2026-06-17.