CVE-2025-9527: Linksys e1700 Firmware

High severity, CVSS 8.8. EPSS: 1.5% chance of exploitation in the next 30 days.

A vulnerability was found in Linksys E1700 1.0.0.4.003. This affects the function QoSSetup of the file /goform/QoSSetup. Performing manipulation of the argument ack_policy results in stack-based buffer overflow. The attack may be initiated remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

• Linksys e1700 Firmware: version 1.0.0.4.003 only

Published 2025-08-27. Last modified 2026-06-17.