CVE-2024-13974: Sophos Firewall Firmware

High severity, CVSS 8.1. EPSS: 7.4% chance of exploitation in the next 30 days.

A business logic vulnerability in the Up2Date component of Sophos Firewall older than version 21.0 MR1 (20.0.1) can lead to attackers controlling the firewall’s DNS environment to achieve remote code execution.

Affected products

• Sophos Firewall Firmware: before 21.0.1 (fixed in 21.0.1)

Published 2025-07-21. Last modified 2026-06-17.