High severity8.6NVD Advisory· Published Jul 16, 2020· Updated Jun 17, 2026

CVE-2020-3358

Description

A vulnerability in the Secure Sockets Layer (SSL) VPN feature for Cisco Small Business RV VPN Routers could allow an unauthenticated, remote attacker to cause the device to unexpectedly restart, causing a denial of service (DoS) condition. The vulnerability is due to a lack of proper input validation of HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request over an SSL connection to the targeted device. A successful exploit could allow the attacker to cause a reload, resulting in a DoS condition.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Cisco Systems, Inc./Rv340 Dual Wan Gigabit VPN Router Firmware
cpe:2.3:o:cisco:rv340_dual_wan_gigabit_vpn_router_firmware:*:*:*:*:*:*:*:*
Range: <1.0.03.18
Cisco Systems, Inc./Rv340w Dual Wan Gigabit Wireless Ac VPN Router Firmware
cpe:2.3:o:cisco:rv340w_dual_wan_gigabit_wireless-ac_vpn_router_firmware:*:*:*:*:*:*:*:*
Range: <1.0.03.18
Cisco Systems, Inc./Rv345 Dual Wan Gigabit VPN Router Firmware
cpe:2.3:o:cisco:rv345_dual_wan_gigabit_vpn_router_firmware:*:*:*:*:*:*:*:*
Range: <1.0.03.18
Cisco Systems, Inc./Rv345p Dual Wan Gigabit Poe VPN Router Firmware
cpe:2.3:o:cisco:rv345p_dual_wan_gigabit_poe_vpn_router_firmware:*:*:*:*:*:*:*:*
Range: <1.0.03.18
Cisco Systems, Inc./Small Business RV160 VPN Routersllm-fuzzy
Cisco Systems, Inc./Small Business Rv Series Router Firmwarecpe-rescue
Range: n/a

Patches

Vulnerability mechanics

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-dos-ZN5GvNH7nvdVendor Advisory

News mentions

No linked articles in our index yet.

cvss	0.559
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000