New! Vulnerability Priority Rating (VPR)
Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it's different from CVSS.
VPR Score: 5.2
Synopsis
The remote device is missing a vendor-supplied security patch.
Description
According to its self-reported version, IOS-XE is affected by multiple denial of service vulnerabilities in the zone-based firewall feature due to incomplete handling of Layer 4 packets through the device. An unauthenticated, remote attacker can exploit these, by sending a certain sequence of traffic patterns through the device, to cause the device to reload or stop forwarding traffic through the firewall, causing a denial of service.
Solution
Upgrade to the relevant fixed version referenced in Cisco bug IDs CSCvs71952 and CSCvt52986.