CVE-2021-36580: Icewarp Server

Medium severity, CVSS 6.1. EPSS: 1.6% chance of exploitation in the next 30 days.

Open Redirect vulnerability exists in IceWarp MailServer IceWarp Server Deep Castle 2 Update 1 (13.0.1.2) via the referer parameter.

Affected products

• Icewarp Icewarp Server: before 13.0.1.2 (fixed in 13.0.1.2)
• Icewarp Mail Server: before 13.0.1.2 (fixed in 13.0.1.2)

Published 2023-07-27. Last modified 2026-07-09.