CVE-2025-5440: Linksys RE6250 Firmware

High severity, CVSS 8.8. EPSS: 5% chance of exploitation in the next 30 days.

A vulnerability classified as critical has been found in Linksys RE6500, RE6250, RE6300, RE6350, 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 NTP of the file /goform/NTP. The manipulation of the argument manual_year_select/manual_month_select/manual_day_select/manual_hour_select/manual_min_select/manual_sec_select leads to os command injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public 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 2025-06-02. Last modified 2026-06-17.