CVE-2021-21976: VMware Vsphere Replication

High severity, CVSS 7.2. EPSS: 2.1% chance of exploitation in the next 30 days.

vSphere Replication 8.3.x prior to 8.3.1.2, 8.2.x prior to 8.2.1.1, 8.1.x prior to 8.1.2.3 and 6.5.x prior to 6.5.1.5 contain a post-authentication command injection vulnerability which may allow an authenticated admin user to perform a remote code execution.

Affected products

• VMware Vsphere Replication: from 6.5.0, before 6.5.1.5 (fixed in 6.5.1.5); from 8.1.0, before 8.1.2.3 (fixed in 8.1.2.3); from 8.2.0, before 8.2.1.1 (fixed in 8.2.1.1); from 8.3.0, before 8.3.1.2 (fixed in 8.3.1.2)

Published 2021-02-11. Last modified 2026-06-17.