CVE-2023-4581
Medium
Description
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.
SeverityMedium
CVSS4.3
Exploit probability—
Product
Mozilla Firefox
PublishedSep 11, 2023
First seenSep 11, 2023
How to fix
Update
- mozilla firefox117.0, 115.2 or later
- mozilla firefox_esr102.15 or later
- mozilla thunderbird115.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 117.0, 115.0 ≤ v < 115.2 | 117.0, 115.2 |
| mozilla firefox_esr | v < 102.15 | 102.15 |
| mozilla thunderbird | v < 115.2 | 115.2 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.