CVE-2023-4577

Memory corruption in JIT UpdateRegExpStatics

published September 11, 2023

CVSS
—
EPSS
1%
Percentile
50.6
In the wild
Unconfirmed
What it is

When `UpdateRegExpStatics` attempted to access `initialStringHeap` it could already have been garbage collected prior to entering the function, which could potentially have led to an exploitable crash. This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00652 · 50.6th percentile
Published
2023-09-11T08:01Z
EPSS history
Timeline
  • 11 SEP 08:01Z
    Memory corruption in JIT UpdateRegExpStatics
    cvelistv5