CVE-2025-9392: Linksys RE6250 Firmware

High severity, CVSS 8.8. EPSS: 4.7% chance of exploitation in the next 30 days.

A security vulnerability has been detected in Linksys RE6250, RE6300, RE6350, RE6500, RE7000 and RE9000 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.001. This affects the function qosClassifier of the file /goform/qosClassifier. Such manipulation of the argument dir/sFromPort/sToPort/dFromPort/dToPort/protocol/layer7/dscp/remark_dscp leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

• Linksys RE6250 Firmware: version 1.0.04.001 only
• Linksys RE6300 Firmware: version 1.2.07.001 only
• Linksys RE6350 Firmware: version 1.0.04.001 only
• Linksys RE6500 Firmware: version 1.0.013.001 only
• Linksys RE7000 Firmware: version 1.1.05.003 only
• Linksys RE9000 Firmware: version 1.0.04.002 only

Published 2025-08-24. Last modified 2026-06-17.