CVE-2021-23960

Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash

published February 26, 2021

CVSS
—
EPSS
1%
Percentile
70.0
In the wild
Unconfirmed
What it is

Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01289 · 70.0th percentile
Published
2021-02-26T02:05Z
EPSS history
Timeline
  • 26 FEB 02:05Z
    Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash
    cvelistv5