CVE-2021-27216
6.3
MEDIUM
CVSS 3.1
EPSS 0.06%
Description
Exim 4 before 4.94.2 has Execution with Unnecessary Privileges. By leveraging a delete_pid_file race condition, a local user can delete arbitrary files as root. This involves the -oP and -oPX options.
How to fix CVE-2021-27216
To remediate CVE-2021-27216, upgrade the affected package to a fixed version below.
- Debian/exim4—upgrade to 4.94.2-1 or later
Is CVE-2021-27216 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 4.94.2-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.3 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H |