A vulnerability in IPv6 traffic processing of Cisco IOS XE Wireless Controller Software for Cisco Catalyst 9000 Family Wireless Controllers could allow an unauthenticated, adjacent attacker to cause a Layer 2 (L2) loop in a configured VLAN, resulting in a denial of service (DoS) condition for that VLAN. The vulnerability is due to a logic error when processing specific link-local IPv6 traffic. An attacker could exploit this vulnerability by sending a crafted IPv6 packet that would flow inbound through the wired interface of an affected device. A successful exploit could allow the attacker to cause traffic drops in the affected VLAN, thus triggering the DoS condition.
The code contains a control flow path that does not reflect the algorithm that the path is intended to implement, leading to incorrect behavior any time this path is navigated.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ios_xe | Cisco | * | * |
| Ios_xe | Cisco | 3.15.1xbs (including) | 3.15.1xbs (including) |
| Ios_xe | Cisco | 3.15.2xbs (including) | 3.15.2xbs (including) |
| Ios_xe | Cisco | 16.7.1 (including) | 16.7.1 (including) |
| Ios_xe | Cisco | 16.7.1a (including) | 16.7.1a (including) |
| Ios_xe | Cisco | 16.7.1b (including) | 16.7.1b (including) |
| Ios_xe | Cisco | 16.7.2 (including) | 16.7.2 (including) |
| Ios_xe | Cisco | 16.7.3 (including) | 16.7.3 (including) |
| Ios_xe | Cisco | 16.7.4 (including) | 16.7.4 (including) |
| Ios_xe | Cisco | 16.8.1 (including) | 16.8.1 (including) |
| Ios_xe | Cisco | 16.8.1a (including) | 16.8.1a (including) |
| Ios_xe | Cisco | 16.8.1b (including) | 16.8.1b (including) |
| Ios_xe | Cisco | 16.8.1c (including) | 16.8.1c (including) |
| Ios_xe | Cisco | 16.8.1d (including) | 16.8.1d (including) |
| Ios_xe | Cisco | 16.8.1e (including) | 16.8.1e (including) |
| Ios_xe | Cisco | 16.8.1s (including) | 16.8.1s (including) |
| Ios_xe | Cisco | 16.8.2 (including) | 16.8.2 (including) |
| Ios_xe | Cisco | 16.8.3 (including) | 16.8.3 (including) |
| Ios_xe | Cisco | 16.9.1 (including) | 16.9.1 (including) |
| Ios_xe | Cisco | 16.9.1a (including) | 16.9.1a (including) |
| Ios_xe | Cisco | 16.9.1b (including) | 16.9.1b (including) |
| Ios_xe | Cisco | 16.9.1c (including) | 16.9.1c (including) |
| Ios_xe | Cisco | 16.9.1d (including) | 16.9.1d (including) |
| Ios_xe | Cisco | 16.9.1s (including) | 16.9.1s (including) |
| Ios_xe | Cisco | 16.9.2 (including) | 16.9.2 (including) |
| Ios_xe | Cisco | 16.9.2a (including) | 16.9.2a (including) |
| Ios_xe | Cisco | 16.9.2s (including) | 16.9.2s (including) |
| Ios_xe | Cisco | 16.9.3 (including) | 16.9.3 (including) |
| Ios_xe | Cisco | 16.9.3a (including) | 16.9.3a (including) |
| Ios_xe | Cisco | 16.9.3h (including) | 16.9.3h (including) |
| Ios_xe | Cisco | 16.9.3s (including) | 16.9.3s (including) |
| Ios_xe | Cisco | 16.9.4 (including) | 16.9.4 (including) |
| Ios_xe | Cisco | 16.9.4c (including) | 16.9.4c (including) |
| Ios_xe | Cisco | 16.9.5 (including) | 16.9.5 (including) |
| Ios_xe | Cisco | 16.9.5f (including) | 16.9.5f (including) |
| Ios_xe | Cisco | 16.9.6 (including) | 16.9.6 (including) |
| Ios_xe | Cisco | 16.9.7 (including) | 16.9.7 (including) |
| Ios_xe | Cisco | 16.10.1 (including) | 16.10.1 (including) |
| Ios_xe | Cisco | 16.10.1a (including) | 16.10.1a (including) |
| Ios_xe | Cisco | 16.10.1b (including) | 16.10.1b (including) |
| Ios_xe | Cisco | 16.10.1c (including) | 16.10.1c (including) |
| Ios_xe | Cisco | 16.10.1d (including) | 16.10.1d (including) |
| Ios_xe | Cisco | 16.10.1e (including) | 16.10.1e (including) |
| Ios_xe | Cisco | 16.10.1f (including) | 16.10.1f (including) |
| Ios_xe | Cisco | 16.10.1g (including) | 16.10.1g (including) |
| Ios_xe | Cisco | 16.10.1s (including) | 16.10.1s (including) |
| Ios_xe | Cisco | 16.10.2 (including) | 16.10.2 (including) |
| Ios_xe | Cisco | 16.10.3 (including) | 16.10.3 (including) |
| Ios_xe | Cisco | 16.11.1 (including) | 16.11.1 (including) |
| Ios_xe | Cisco | 16.11.1a (including) | 16.11.1a (including) |
| Ios_xe | Cisco | 16.11.1b (including) | 16.11.1b (including) |
| Ios_xe | Cisco | 16.11.1c (including) | 16.11.1c (including) |
| Ios_xe | Cisco | 16.11.1s (including) | 16.11.1s (including) |
| Ios_xe | Cisco | 16.11.2 (including) | 16.11.2 (including) |
| Ios_xe | Cisco | 16.12.1 (including) | 16.12.1 (including) |
| Ios_xe | Cisco | 16.12.1a (including) | 16.12.1a (including) |
| Ios_xe | Cisco | 16.12.1c (including) | 16.12.1c (including) |
| Ios_xe | Cisco | 16.12.1s (including) | 16.12.1s (including) |
| Ios_xe | Cisco | 16.12.1t (including) | 16.12.1t (including) |
| Ios_xe | Cisco | 16.12.1w (including) | 16.12.1w (including) |
| Ios_xe | Cisco | 16.12.1x (including) | 16.12.1x (including) |
| Ios_xe | Cisco | 16.12.1y (including) | 16.12.1y (including) |
| Ios_xe | Cisco | 16.12.1z (including) | 16.12.1z (including) |
| Ios_xe | Cisco | 16.12.1z1 (including) | 16.12.1z1 (including) |
| Ios_xe | Cisco | 16.12.1za (including) | 16.12.1za (including) |
| Ios_xe | Cisco | 16.12.2 (including) | 16.12.2 (including) |
| Ios_xe | Cisco | 16.12.2a (including) | 16.12.2a (including) |
| Ios_xe | Cisco | 16.12.2s (including) | 16.12.2s (including) |
| Ios_xe | Cisco | 16.12.2t (including) | 16.12.2t (including) |
| Ios_xe | Cisco | 16.12.3 (including) | 16.12.3 (including) |
| Ios_xe | Cisco | 16.12.3a (including) | 16.12.3a (including) |
| Ios_xe | Cisco | 16.12.3s (including) | 16.12.3s (including) |
| Ios_xe | Cisco | 16.12.4 (including) | 16.12.4 (including) |
| Ios_xe | Cisco | 16.12.4a (including) | 16.12.4a (including) |
| Ios_xe | Cisco | 17.1.1 (including) | 17.1.1 (including) |
| Ios_xe | Cisco | 17.1.1a (including) | 17.1.1a (including) |
| Ios_xe | Cisco | 17.1.1s (including) | 17.1.1s (including) |
| Ios_xe | Cisco | 17.1.1t (including) | 17.1.1t (including) |
| Ios_xe | Cisco | 17.1.2 (including) | 17.1.2 (including) |
| Ios_xe | Cisco | 17.1.3 (including) | 17.1.3 (including) |
| Ios_xe | Cisco | 17.2.1 (including) | 17.2.1 (including) |
| Ios_xe | Cisco | 17.2.1a (including) | 17.2.1a (including) |
| Ios_xe | Cisco | 17.2.1r (including) | 17.2.1r (including) |
| Ios_xe | Cisco | 17.2.1v (including) | 17.2.1v (including) |
| Ios_xe | Cisco | 17.2.2 (including) | 17.2.2 (including) |
| Ios_xe | Cisco | 17.2.3 (including) | 17.2.3 (including) |
| Ios_xe | Cisco | 17.3.1 (including) | 17.3.1 (including) |
| Ios_xe | Cisco | 17.3.1a (including) | 17.3.1a (including) |
| Ios_xe | Cisco | 17.3.1w (including) | 17.3.1w (including) |
| Ios_xe | Cisco | 17.3.1x (including) | 17.3.1x (including) |
| Ios_xe | Cisco | 17.3.1z (including) | 17.3.1z (including) |
| Ios_xe | Cisco | 17.3.2 (including) | 17.3.2 (including) |
| Ios_xe | Cisco | 17.3.2a (including) | 17.3.2a (including) |