CVE-2020-3199: Cisco IOS

High severity, CVSS 8.8. EPSS: 0.7% chance of exploitation in the next 30 days.

Multiple vulnerabilities in the Cisco IOx application environment of Cisco 809 and 829 Industrial Integrated Services Routers (Industrial ISRs) and Cisco 1000 Series Connected Grid Routers (CGR1000) that are running Cisco IOS Software could allow an attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

Affected products

• Cisco IOS: version 12.2(60)ez16 only; version 15.0(2)sg11a only; version 15.3(3)jaa1 only; version 15.3(3)jpj only; version 15.4(1)cg only; version 15.4(2)cg only; …

Published 2020-06-03. Last modified 2026-06-17.