A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Software for Cisco Catalyst 9000 Family Wireless Controllers could allow an unauthenticated, remote attacker to execute arbitrary code with administrative privileges or cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a logic error that occurs during the validation of CAPWAP packets. An attacker could exploit this vulnerability by sending a crafted CAPWAP packet to an affected device. A successful exploit could allow the attacker to execute arbitrary code with administrative privileges or cause the affected device to crash and reload, resulting in a DoS condition.
This vulnerability carries a CRITICAL severity rating with a CVSS v3.1 score of 10.0, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 11 products from cisco, from cisco, from cisco and 8 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2021-09-23T03:15:20.713
2025-10-30T21:16:34.240
Analyzed
CVSSv3.1: 10.0 (CRITICAL)
AV:N/AC:L/Au:S/C:C/I:C/A:C
8.0
10.0
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | cisco | ios_xe | - | Yes |
| Operating System | cisco | ios_xe | 3.15.1xbs | Yes |
| Operating System | cisco | ios_xe | 3.15.2xbs | Yes |
| Operating System | cisco | ios_xe | 16.6.4s | Yes |
| Operating System | cisco | ios_xe | 16.10.1 | Yes |
| Operating System | cisco | ios_xe | 16.10.1e | Yes |
| Operating System | cisco | ios_xe | 16.10.1s | Yes |
| Operating System | cisco | ios_xe | 16.11.1 | Yes |
| Operating System | cisco | ios_xe | 16.11.1a | Yes |
| Operating System | cisco | ios_xe | 16.11.1b | Yes |
| Operating System | cisco | ios_xe | 16.11.1c | Yes |
| Operating System | cisco | ios_xe | 16.11.2 | Yes |
| Operating System | cisco | ios_xe | 16.12.1 | Yes |
| Operating System | cisco | ios_xe | 16.12.1s | Yes |
| Operating System | cisco | ios_xe | 16.12.1t | Yes |
| Operating System | cisco | ios_xe | 16.12.2s | Yes |
| Operating System | cisco | ios_xe | 16.12.2t | Yes |
| Operating System | cisco | ios_xe | 16.12.3 | Yes |
| Operating System | cisco | ios_xe | 16.12.3s | Yes |
| Operating System | cisco | ios_xe | 16.12.4 | Yes |
| Operating System | cisco | ios_xe | 16.12.4a | Yes |
| Operating System | cisco | ios_xe | 17.1.1 | Yes |
| Operating System | cisco | ios_xe | 17.1.1s | Yes |
| Operating System | cisco | ios_xe | 17.1.1t | Yes |
| Operating System | cisco | ios_xe | 17.1.2 | Yes |
| Operating System | cisco | ios_xe | 17.1.3 | Yes |
| Operating System | cisco | ios_xe | 17.2.1 | Yes |
| Operating System | cisco | ios_xe | 17.2.1a | Yes |
| Operating System | cisco | ios_xe | 17.3.1 | Yes |
| Hardware | cisco | catalyst_9800 | - | No |
| Hardware | cisco | catalyst_9800-40 | - | No |
| Hardware | cisco | catalyst_9800-40_wireless_controller | - | No |
| Hardware | cisco | catalyst_9800-80 | - | No |
| Hardware | cisco | catalyst_9800-80_wireless_controller | - | No |
| Hardware | cisco | catalyst_9800-cl | - | No |
| Hardware | cisco | catalyst_9800-l | - | No |
| Hardware | cisco | catalyst_9800-l-c | - | No |
| Hardware | cisco | catalyst_9800-l-f | - | No |
| Hardware | cisco | catalyst_9800_embedded_wireless_controller | - | No |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.