CVE-2021-1473: Cisco RV340 Firmware

Critical severity, CVSS 9.8. EPSS: 64.4% chance of exploitation in the next 30 days.

Multiple vulnerabilities exist in the web-based management interface of Cisco Small Business RV Series Routers. A remote attacker could execute arbitrary commands or bypass authentication and upload files on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

Affected products

• Cisco RV340 Firmware: before 1.0.03.21 (fixed in 1.0.03.21)
• Cisco RV340W Firmware: before 1.0.03.21 (fixed in 1.0.03.21)
• Cisco RV345 Firmware: before 1.0.03.21 (fixed in 1.0.03.21)
• Cisco RV345P Firmware: before 1.0.03.21 (fixed in 1.0.03.21)

Published 2021-04-08. Last modified 2026-06-17.