CVE-2020-3358
8.6 · HIGHOverview
CVE-2020-3358 is a high-severity vulnerability affecting cisco rv340_dual_wan_gigabit_vpn_router_firmware. It was published on July 16, 2020 and has a CVSS 3.1 base score of 8.6 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from cisco. Update rv340_dual_wan_gigabit_vpn_router_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| cisco | rv340_dual_wan_gigabit_vpn_router_firmware | >= 0, < 1.0.03.18 | Affected |
| cisco | rv340w_dual_wan_gigabit_wireless-ac_vpn_router_firmware | >= 0, < 1.0.03.18 | Affected |
| cisco | rv345_dual_wan_gigabit_vpn_router_firmware | >= 0, < 1.0.03.18 | Affected |
| cisco | rv345p_dual_wan_gigabit_poe_vpn_router_firmware | >= 0, < 1.0.03.18 | Affected |
Frequently Asked Questions
What is CVE-2020-3358?
CVE-2020-3358 is a high-severity vulnerability affecting cisco rv340_dual_wan_gigabit_vpn_router_firmware. It was published on July 16, 2020 and has a CVSS 3.1 base score of 8.6 (HIGH).
How severe is CVE-2020-3358?
This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2020-3358?
Check the references section for vendor advisories and patches from cisco. Update rv340_dual_wan_gigabit_vpn_router_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2020-3358?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-3358 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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