CVE-2020-14387: Samba Rsync

High severity, CVSS 7.4. EPSS: 1.1% chance of exploitation in the next 30 days.

A flaw was found in rsync in versions since 3.2.0pre1. Rsync improperly validates certificate with host mismatch vulnerability. A remote, unauthenticated attacker could exploit the flaw by performing a man-in-the-middle attack using a valid certificate for another hostname which could compromise confidentiality and integrity of data transmitted using rsync-ssl. The highest threat from this vulnerability is to data confidentiality and integrity. This flaw affects rsync versions before 3.2.4.

Affected products

• Samba Rsync: from 3.2.1, before 3.2.4 (fixed in 3.2.4); version 3.2.0 only

Published 2021-05-27. Last modified 2026-06-17.