CVE-2020-28013
7.8
HIGH
CVSS 3.1
EPSS 0.05%
Description
Exim 4 before 4.94.2 allows Heap-based Buffer Overflow because it mishandles "-F '.('" on the command line, and thus may allow privilege escalation from any user to root. This occurs because of the interpretation of negative sizes in strncpy.
How to fix CVE-2020-28013
To remediate CVE-2020-28013, upgrade the affected package to a fixed version below.
- Debian/exim4—upgrade to 4.94.2-1 or later
Is CVE-2020-28013 being exploited?
Low — EPSS is 0.0%, 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 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |