CVE-2021-1342: Cisco RV016 Multi-WAN VPN Router Firmware

High severity, CVSS 7.2. EPSS: 2.8% chance of exploitation in the next 30 days.

Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, RV082, RV320, and RV325 Routers could allow an authenticated, remote attacker to execute arbitrary code or cause an affected device to restart unexpectedly. These vulnerabilities are due to improper validation of user-supplied input in the web-based management interface. An attacker could exploit these vulnerabilities by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute arbitrary code as the root user on the underlying operating system or cause the device to reload, resulting in a denial of service (DoS) condition. To exploit these vulnerabilities, an attacker would need to have valid administrator credentials on the affected device.

Affected products

• Cisco RV016 Multi-WAN VPN Router Firmware: up to and including 4.2.3.14
• Cisco RV042 Dual WAN VPN Router Firmware: up to and including 4.2.3.14
• Cisco RV042G Dual Gigabit WAN VPN Router Firmware: up to and including 4.2.3.14
• Cisco RV082 Dual WAN VPN Router Firmware: up to and including 4.2.3.14
• Cisco RV320 Dual Gigabit WAN VPN Router Firmware: up to and including 1.5.1.11
• Cisco RV325 Dual Gigabit WAN VPN Router Firmware: up to and including 1.5.1.11

Published 2021-02-04. Last modified 2026-06-17.