A vulnerability in the multicast DNS (mDNS) feature of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to improper validation of mDNS packets. An attacker could exploit this vulnerability by sending a crafted mDNS packet to an affected device. A successful exploit could cause a device to reload, resulting in a DoS condition.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.6, 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 and availability (service disruption) for affected systems. Impacting 15 products from cisco, from cisco, from cisco and 12 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2020, 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.
2020-09-24T18:15:17.417
2024-12-19T13:52:35.190
Modified
CVSSv3.1: 8.6 (HIGH)
AV:N/AC:L/Au:N/C:N/I:N/A:C
10.0
6.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | cisco | ios_xe | 16.12.1 | Yes |
| Hardware | cisco | 2610xm | - | No |
| Hardware | cisco | 2611xm | - | No |
| Hardware | cisco | 2612 | - | No |
| Hardware | cisco | 2620xm | - | No |
| Hardware | cisco | 2621xm | - | No |
| Hardware | cisco | 2650xm | - | No |
| Hardware | cisco | 2651xm | - | No |
| Hardware | cisco | 2691 | - | No |
| Hardware | cisco | catalyst_9800-40 | - | No |
| Hardware | cisco | catalyst_9800-80 | - | 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 |
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.