CVE-2020-12387

A race condition when running shutdown code for Web Worker led to a use-after-free vulnerability

published May 26, 2020

CVSS
—
EPSS
1%
Percentile
73.0
In the wild
Unconfirmed
What it is

A race condition when running shutdown code for Web Worker led to a use-after-free vulnerability. This resulted in a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01438 · 73.0th percentile
Published
2020-05-26T17:04Z
EPSS history
Timeline
  • 26 MAY 17:04Z
    A race condition when running shutdown code for Web Worker led to a use-after-free vulnerability
    cvelistv5