CVE-2023-29539EPSS p52.9%
CVE-2023-29539CVE-2023-29539
mozilla / firefox
Description
When handling the filename directive in the Content-Disposition header, the filename would be truncated if the filename contained a NULL character. This could have led to reflected file download attacks potentially tricking users to install malware. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird < 102.10.
Scoring
| CVSS | 8.8 () |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| EPSS | 0.74% probability of exploitation · percentile 52.9% · 2026-10-05T12:00:23Z |
| Last modified | 2026-08-19 |