CVE-2022-22740
8.8
HIGH
CVSS 3.1
EPSS 0.51%
Description
Certain network request objects were freed too early when releasing a network request handle. This could have lead to a use-after-free causing a potentially exploitable crash. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5.
How to fix CVE-2022-22740
To remediate CVE-2022-22740, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 91.5.0esr-1~deb11u1 or later
- —upgrade to 1:91.5.0-2~deb11u1 or later
Is CVE-2022-22740 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 91.5.0esr-1~deb11u1
- from 0, < 1:91.5.0-2~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |