CVE-2020-28014 Privilege escalation in n/a

What is CVE-2020-28014?

CVE-2020-28014 is a medium-severity vulnerability in Exim Exim, published on 6 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Exim 4 before 4.94.2 allows Execution with Unnecessary Privileges. The -oP option is available to the exim user, and allows a denial of service because root-owned files can be overwritten.

Weakness: CWE-269

Which versions are affected by CVE-2020-28014?

It affects 1 product.

Products include Exim Exim.

How do I fix CVE-2020-28014?

Upgrade to a fixed version.

Is CVE-2020-28014 being exploited?

There is no known exploitation of CVE-2020-28014 in the wild and no public exploit code.

Other vulnerabilities in Exim Exim

• CVE-2026-45185 Use after free in Exim Critical 9.8
• CVE-2023-42115 Exim AUTH Out-Of-Bounds Write Remote Code Execution Vulnerability Critical 9.8
• CVE-2020-28017 Integer overflow in n/a Critical 9.8
• CVE-2020-28018 Use after free in n/a Critical 9.8
• CVE-2020-28020 Integer overflow in n/a Critical 9.8

All Exim Exim vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as CLEANSTART-2025-KA91333, DEBIAN-CVE-2020-28014, GHSA-8rq7-g7j7-m3rf, UBUNTU-CVE-2020-28014.