CVE-2018-18820: Debian Linux

High severity, CVSS 8.1. EPSS: 48.9% chance of exploitation in the next 30 days.

A buffer overflow was discovered in the URL-authentication backend of the Icecast before 2.4.4. If the backend is enabled, then any malicious HTTP client can send a request for that specific resource including a crafted header, leading to denial of service and potentially remote code execution.

Affected products

• Debian Debian Linux: version 8.0 only; version 9.0 only
• Xiph Icecast: before 2.4.4 (fixed in 2.4.4)

Published 2018-11-05. Last modified 2026-06-17.