CVE-2021-41585: Apache Traffic Server

High severity, CVSS 7.5. EPSS: 2.5% chance of exploitation in the next 30 days.

Improper Input Validation vulnerability in accepting socket connections in Apache Traffic Server allows an attacker to make the server stop accepting new connections. This issue affects Apache Traffic Server 5.0.0 to 9.1.0.

Affected products

• Apache Traffic Server: from 8.0.0, up to and including 8.1.2; from 9.0.0, up to and including 9.1.0

Published 2021-11-03. Last modified 2026-06-17.