CVE-2023-4056
9.8
CRITICAL
CVSS 3.1
EPSS 0.65%
Description
Memory safety bugs present in Firefox 115, Firefox ESR 115.0, Firefox ESR 102.13, Thunderbird 115.0, and Thunderbird 102.13. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.
How to fix CVE-2023-4056
To remediate CVE-2023-4056, upgrade the affected package to a fixed version below.
- —upgrade to 102.14.0esr-1~deb11u1 or later
- —upgrade to 1:102.14.0-1~deb11u1 or later
Is CVE-2023-4056 being exploited?
Low — EPSS is 0.6%, 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 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |