CVE-2024-3859
5.9
MEDIUM
CVSS 3.1
EPSS 2.1%
Description
On 32-bit versions there were integer-overflows that led to an out-of-bounds-read that potentially could be triggered by a malformed OpenType font. This vulnerability affects Firefox < 125, Firefox ESR < 115.10, and Thunderbird < 115.10.
How to fix CVE-2024-3859
To remediate CVE-2024-3859, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 115.10.0esr-1~deb11u1 or later
- Debian/thunderbird—upgrade to 1:115.10.1-1~deb11u1 or later
Is CVE-2024-3859 being exploited?
Low — EPSS is 2.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 115.10.0esr-1~deb11u1
- from 0, < 1:115.10.1-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:N |