CVE-2019-9813
HIGH8.8EPSS 46.7%Published: 4/26/2019Modified: 4/28/2026
Also known as:DEBIAN-CVE-2019-9813
Description
Incorrect handling of __proto__ mutations may lead to type confusion in IonMonkey JIT code and can be leveraged for arbitrary memory read and write. This vulnerability affects Firefox < 66.0.1, Firefox ESR < 60.6.1, and Thunderbird < 60.6.1.
Affected packages (1)
- Debian/firefox-esrfrom 0, < 60.6.1esr-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |