CVE-2021-29946

Ports that were written as an integer overflow above the bounds of a 16-bit integer could have bypassed port blocking restrictions when used in the Alt-Svc…

published June 24, 2021

CVSS
—
EPSS
1%
Percentile
70.3
In the wild
Unconfirmed
What it is

Ports that were written as an integer overflow above the bounds of a 16-bit integer could have bypassed port blocking restrictions when used in the Alt-Svc header. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01303 · 70.3th percentile
Published
2021-06-24T13:19Z
EPSS history
Timeline
  • 24 JUN 13:19Z
    Ports that were written as an integer overflow above the bounds of a 16-bit integer could have bypassed port blocking restrictions when used in the Alt-Svc…
    cvelistv5