CVE-2013-5122: Cisco Linksys e4200 Firmware

Critical severity, CVSS 9.8. EPSS: 3.7% chance of exploitation in the next 30 days.

Cisco Linksys Routers EA2700, EA3500, E4200, EA4500: A bug can cause an unsafe TCP port to open which leads to unauthenticated access

Affected products

• Cisco Linksys e4200 Firmware: version 2.0.36 only
• Cisco Linksys EA2700 Firmware: version 1.0.14 only
• Cisco Linksys EA3500 Firmware: version 1.0.30 only
• Cisco Linksys EA4500 Firmware: version 2.0.36 only

Published 2020-01-07. Last modified 2026-06-16.