CVE-2022-23639
firefoxVulnerabilityCVSS 8.1PatchedPoC
A public proof-of-concept or exploit code is available, raising the risk of active exploitation. A fixed version is available (see the table below).
Recommended action: Update to the fixed version listed for your distribution using the native package manager.
Severity metrics
CVSS 3.1 : 8.1 HIGH · CVSS 2.0 : 6.8 MEDIUM
Attack vectorNetwork (remote)
Attack complexityHigh
Privileges requiredNone
User interactionNone
ScopeUnchanged
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Vector: AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected & fixed versions by distribution
Versions are the native distribution strings (backport-aware): RHEL/Debian/SUSE backport fixes, so compare with the distro version comparator (dpkg / rpm / vercmp), not the upstream version.
| Distribution | Package | Affected | Fixed version | Status |
|---|---|---|---|---|
| Ubuntu:22.04:LTS | firefox | - | 1:1snap1-0ubuntu1 | fixed |
| Ubuntu:22.04:LTS | thunderbird | - | - | affected (no fix yet) |
| Ubuntu:24.04:LTS | thunderbird | - | - | affected (no fix yet) |
| Ubuntu:25.10 | thunderbird | - | - | affected (no fix yet) |
| Ubuntu:26.04:LTS | thunderbird | - | - | affected (no fix yet) |