What is CVE-2020-8015?

CVE-2020-8015 is a high-severity vulnerability in Exim, classified under Improper Link Resolution Before File Access. CVSS score: 8.4/10. Published 2020-04-02.

How severe is CVE-2020-8015?

High severity. CVSS v3 base score is 8.4 out of 10.

Vulnerability in Exim

CVE-2020-8015

A UNIX Symbolic Link (Symlink) Following vulnerability in the packaging of exim in openSUSE Factory allows local attackers to escalate from user mail to root. This issue affects: openSUSE Factory exim versions prior to 4.93.0.4-3.1.

Published 2020-04-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (42.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Exim
openSUSE Factory — versions exim
openSUSE

Weakness classification (CWE)

CWE-59 — Improper Link Resolution Before File Access

References

lists.opensuse.org/opensuse-security-announce/2020-04/msg00010.html (vendor-advisory)
bugzilla.suse.com/show_bug.cgi (Exploit, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2020-8015?: CVE-2020-8015 is a high-severity vulnerability in Exim, classified under Improper Link Resolution Before File Access. CVSS score: 8.4/10. Published 2020-04-02.
How severe is CVE-2020-8015?: High severity. CVSS v3 base score is 8.4 out of 10.