CVE-2023-4049
5.9
MEDIUM
CVSS 3.1
EPSS 0.23%
Description
Race conditions in reference counting code were found through code inspection. These could have resulted in potentially exploitable use-after-free vulnerabilities. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.
How to fix CVE-2023-4049
To remediate CVE-2023-4049, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 102.14.0esr-1~deb11u1 or later
- —upgrade to 1:102.14.0-1~deb11u1 or later
Is CVE-2023-4049 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 102.14.0esr-1~deb11u1
- from 0, < 1:102.14.0-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |