CVE-2021-1415: Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers Authenticated Remote Code Execution Vulnerabilities

Severity: medium (CVSS 6.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-04-08 · updated 2026-06-17
Weakness: CWE-502

Description

Multiple vulnerabilities in the web-based management interface of Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers could allow an authenticated, remote attacker to execute arbitrary code with elevated privileges equivalent to the web service process on an affected device. These vulnerabilities exist because HTTP requests are not properly validated. An attacker could exploit these vulnerabilities by sending a crafted HTTP request to the web-based management interface of an affected device. A successful exploit could allow the attacker to remotely execute arbitrary code on the device.

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

How to fix

Upgrade to a fixed version: Cisco Rv340 Firmware 1.0.03.21; Cisco Rv340W Firmware 1.0.03.21; Cisco Rv345 Firmware 1.0.03.21; Cisco Rv345P Firmware 1.0.03.21. Check the vendor advisory for mitigations.

References

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