CVE-2018-0170: A vulnerability in the Cisco Umbrella Integration feature of Cisco IOS XE Software could allow an unauthent...

Security readout for executives and security teams

CVE-2018-0170 can let an unauthenticated remote attacker crash affected Cisco IOS XE devices using malformed IP packets. The business impact is network disruption from device reloads, not disclosed data theft. Urgency depends on whether IOS XE devices use the Cisco Umbrella Integration feature and are reachable by untrusted traffic. Exposure is most likely on Cisco IOS XE deployments with Cisco Umbrella Integration enabled, especially devices that can receive crafted IP packets from untrusted networks. The source bundle does not provide affected release ranges or configuration prerequisites beyond the named feature. Treat this as a high-priority availability risk for exposed Cisco IOS XE infrastructure. It is not presented as a data breach issue, but forced reloads of routers or network devices can cause outages. Priority should be highest where affected devices support critical connectivity. Mitigation focus: Check Cisco’s advisory for affected releases, fixed software, and workarounds.; Inventory Cisco IOS XE devices using Cisco Umbrella Integration.; Prioritize upgrades or mitigations for internet-facing or high-availability network devices..

Prepared

Jun 7, 2026, 14:22 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.