CVE-2023-4581

XLL file extensions were downloadable without warnings

published September 11, 2023

CVSS
—
EPSS
1%
Percentile
46.7
In the wild
Unconfirmed
What it is

Excel `.xll` add-in files did not have a blocklist entry in Firefox's executable blocklist which allowed them to be downloaded without any warning of their potential harm. This vulnerability affects Firefox < 117, Firefox ESR < 102.15, Firefox ESR < 115.2, Thunderbird < 102.15, and Thunderbird < 115.2.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00574 · 46.7th percentile
Published
2023-09-11T08:01Z
EPSS history
Timeline
  • 11 SEP 08:01Z
    XLL file extensions were downloadable without warnings
    cvelistv5