CVE-2020-3357

CRITICAL

Cisco Small Business RV340-345 - RCE/DoS

Title source: llm
STIX 2.1

Description

A vulnerability in the Secure Sockets Layer (SSL) VPN feature of Cisco Small Business RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers could allow an unauthenticated, remote attacker to execute arbitrary code on an affected device or cause the device to reload, resulting in a denial of service (DoS) condition. The vulnerability exists because HTTP requests are not properly validated. An attacker could exploit this vulnerability by sending a crafted HTTP request over an SSL connection to an affected device. A successful exploit could allow the attacker to remotely execute arbitrary code on the device or cause the device to reload, resulting in a DoS condition.

References (1)

Core 1
Core References

Scores

CVSS v3 9.8
EPSS 0.0412
EPSS Percentile 88.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact total

Details

CWE
CWE-20
Status published
Products (4)
cisco/rv340_dual_wan_gigabit_vpn_router_firmware < 1.0.03.18
cisco/rv340w_dual_wan_gigabit_wireless-ac_vpn_router_firmware < 1.0.03.18
cisco/rv345_dual_wan_gigabit_vpn_router_firmware < 1.0.03.18
cisco/rv345p_dual_wan_gigabit_poe_vpn_router_firmware < 1.0.03.18
Published Jul 16, 2020
Tracked Since Feb 18, 2026