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TI-2020-02910 Aliases CVE-2020-3358GHSA-rjmm-h25r-cqxf

Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers SSL Denial of Service Vulnerability

Priority MEDIUM 46CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01351 71st percentileScored 2026-11-08
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoCisco Small Business RV Series Router Firmwareall versions—No fix listedCNA
  • Cisco Small Business RV Series Router Firmware VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 8

CPEVersionsRoleVendor
cpe:2.3:o:cisco:rv340_dual_wan_gigabit_vpn_router_firmware:*:*:*:*:*:*:*:*before 1.0.03.18VulnerableCisco
cpe:2.3:h:cisco:rv340_dual_wan_gigabit_vpn_router:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:rv340w_dual_wan_gigabit_wireless-ac_vpn_router_firmware:*:*:*:*:*:*:*:*before 1.0.03.18VulnerableCisco
cpe:2.3:h:cisco:rv340w_dual_wan_gigabit_wireless-ac_vpn_router:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:rv345_dual_wan_gigabit_vpn_router_firmware:*:*:*:*:*:*:*:*before 1.0.03.18VulnerableCisco
cpe:2.3:h:cisco:rv345_dual_wan_gigabit_vpn_router:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:rv345p_dual_wan_gigabit_poe_vpn_router_firmware:*:*:*:*:*:*:*:*before 1.0.03.18VulnerableCisco
cpe:2.3:h:cisco:rv345p_dual_wan_gigabit_poe_vpn_router:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
  • cpe:2.3:o:cisco:rv340_dual_wan_gigabit_vpn_router_firmware:*:*:*:*:*:*:*:* Versions before 1.0.03.18 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:rv340_dual_wan_gigabit_vpn_router:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:rv340w_dual_wan_gigabit_wireless-ac_vpn_router_firmware:*:*:*:*:*:*:*:* Versions before 1.0.03.18 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:rv340w_dual_wan_gigabit_wireless-ac_vpn_router:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:rv345_dual_wan_gigabit_vpn_router_firmware:*:*:*:*:*:*:*:* Versions before 1.0.03.18 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:rv345_dual_wan_gigabit_vpn_router:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:rv345p_dual_wan_gigabit_poe_vpn_router_firmware:*:*:*:*:*:*:*:* Versions before 1.0.03.18 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:rv345p_dual_wan_gigabit_poe_vpn_router:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-3358
  2. 2026-10-03 Alias added: GHSA-rjmm-h25r-cqxf

References

Advisory 1

  • TI-2020-02909 Improper input validation in Cisco Small Business RV Series Router Firmware CVSS 3.1CRITICAL 9.8
  • TI-2024-13326 Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers Privilege Escalation Vulnerability CVSS 3.1HIGH 8.8
  • TI-2024-13394 Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers Remote Code Execution Vulnerability CVSS 3.1HIGH 7.2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences