CVE-2019-9813

Incorrect handling of __proto__ mutations may lead to type confusion in IonMonkey JIT code and can be leveraged for arbitrary memory read and write

published April 26, 2019

CVSS
—
EPSS
7%
Percentile
93.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.06694 · 93.9th percentile
Published
2019-04-26T16:09Z
EPSS history
Timeline
  • 26 APR 16:09Z
    Incorrect handling of __proto__ mutations may lead to type confusion in IonMonkey JIT code and can be leveraged for arbitrary memory read and write
    cvelistv5