CVE-2018-5545: F5 Websafe Alert Server

High severity, CVSS 8.8. EPSS: 2.4% chance of exploitation in the next 30 days.

On F5 WebSafe Alert Server 1.0.0-4.2.6, a malicious, authenticated user can execute code on the alert server by using a maliciously crafted payload.

Affected products

• F5 Websafe Alert Server: from 1.0.0, up to and including 4.2.6

Published 2018-09-13. Last modified 2026-06-17.