A vulnerability in the handling of certain Ethernet frames in Cisco IOS XE Software for Catalyst 9000 Series Switches could allow an unauthenticated, adjacent attacker to cause an egress port to become blocked and drop all outbound traffic. This vulnerability is due to improper handling of crafted Ethernet frames. An attacker could exploit this vulnerability by sending crafted Ethernet frames through an affected switch. A successful exploit could allow the attacker to cause the egress port to which the crafted frame is forwarded to start dropping all frames, resulting in a denial of service (DoS) condition.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.4, indicating it requires adjacent network access 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 56 products from cisco, from cisco, from cisco and 53 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2025, 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.
2025-09-24T18:15:34.757
2026-09-18T10:39:07.903
Analyzed
CVSSv3.1: 7.4 (HIGH)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | cisco | ios_xe | 16.6.1 | Yes |
| Operating System | cisco | ios_xe | 16.6.2 | Yes |
| Operating System | cisco | ios_xe | 16.6.3 | Yes |
| Operating System | cisco | ios_xe | 16.6.4 | Yes |
| Operating System | cisco | ios_xe | 16.6.4a | Yes |
| Operating System | cisco | ios_xe | 16.6.5 | Yes |
| Operating System | cisco | ios_xe | 16.6.6 | Yes |
| Operating System | cisco | ios_xe | 16.6.7 | Yes |
| Operating System | cisco | ios_xe | 16.6.8 | Yes |
| Operating System | cisco | ios_xe | 16.6.9 | Yes |
| Operating System | cisco | ios_xe | 16.6.10 | Yes |
| Operating System | cisco | ios_xe | 16.7.1 | Yes |
| Operating System | cisco | ios_xe | 16.8.1 | Yes |
| Operating System | cisco | ios_xe | 16.8.1a | Yes |
| Operating System | cisco | ios_xe | 16.8.1s | Yes |
| Operating System | cisco | ios_xe | 16.9.1 | Yes |
| Operating System | cisco | ios_xe | 16.9.1s | Yes |
| Operating System | cisco | ios_xe | 16.9.2 | Yes |
| Operating System | cisco | ios_xe | 16.9.3 | Yes |
| Operating System | cisco | ios_xe | 16.9.4 | Yes |
| Operating System | cisco | ios_xe | 16.9.5 | Yes |
| Operating System | cisco | ios_xe | 16.9.6 | Yes |
| Operating System | cisco | ios_xe | 16.9.7 | Yes |
| Operating System | cisco | ios_xe | 16.9.8 | 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 | 16.11.1b | Yes |
| Operating System | cisco | ios_xe | 16.11.1s | Yes |
| Operating System | cisco | ios_xe | 16.12.1 | Yes |
| Operating System | cisco | ios_xe | 16.12.1c | Yes |
| Operating System | cisco | ios_xe | 16.12.1s | Yes |
| Operating System | cisco | ios_xe | 16.12.2 | Yes |
| Operating System | cisco | ios_xe | 16.12.2s | Yes |
| Operating System | cisco | ios_xe | 16.12.3 | Yes |
| Operating System | cisco | ios_xe | 16.12.3a | 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 | 16.12.5 | Yes |
| Operating System | cisco | ios_xe | 16.12.5b | Yes |
| Operating System | cisco | ios_xe | 16.12.6 | Yes |
| Operating System | cisco | ios_xe | 16.12.6a | Yes |
| Operating System | cisco | ios_xe | 16.12.7 | Yes |
| Operating System | cisco | ios_xe | 16.12.8 | Yes |
| Operating System | cisco | ios_xe | 16.12.14 | 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 | 17.1.3 | 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 |
| Operating System | cisco | ios_xe | 17.3.2 | Yes |
| Operating System | cisco | ios_xe | 17.3.2a | Yes |
| Operating System | cisco | ios_xe | 17.3.3 | Yes |
| Operating System | cisco | ios_xe | 17.3.4 | Yes |
| Operating System | cisco | ios_xe | 17.3.4b | Yes |
| Operating System | cisco | ios_xe | 17.3.5 | Yes |
| Operating System | cisco | ios_xe | 17.3.6 | Yes |
| Operating System | cisco | ios_xe | 17.3.7 | Yes |
| Operating System | cisco | ios_xe | 17.3.8 | Yes |
| Operating System | cisco | ios_xe | 17.3.8a | Yes |
| Operating System | cisco | ios_xe | 17.4.1 | Yes |
| Operating System | cisco | ios_xe | 17.5.1 | Yes |
| Operating System | cisco | ios_xe | 17.6.1 | Yes |
| Operating System | cisco | ios_xe | 17.6.1y | Yes |
| Operating System | cisco | ios_xe | 17.6.2 | Yes |
| Operating System | cisco | ios_xe | 17.6.3 | Yes |
| Operating System | cisco | ios_xe | 17.6.4 | Yes |
| Operating System | cisco | ios_xe | 17.6.5 | Yes |
| Operating System | cisco | ios_xe | 17.6.5a | Yes |
| Operating System | cisco | ios_xe | 17.6.6 | Yes |
| Operating System | cisco | ios_xe | 17.6.6a | Yes |
| Operating System | cisco | ios_xe | 17.6.7 | Yes |
| Operating System | cisco | ios_xe | 17.6.8 | Yes |
| Operating System | cisco | ios_xe | 17.7.1 | Yes |
| Operating System | cisco | ios_xe | 17.8.1 | Yes |
| Operating System | cisco | ios_xe | 17.9.1 | Yes |
| Operating System | cisco | ios_xe | 17.9.2 | Yes |
| Operating System | cisco | ios_xe | 17.9.3 | Yes |
| Operating System | cisco | ios_xe | 17.9.4 | Yes |
| Operating System | cisco | ios_xe | 17.9.4a | Yes |
| Operating System | cisco | ios_xe | 17.9.5 | Yes |
| Operating System | cisco | ios_xe | 17.9.6 | Yes |
| Operating System | cisco | ios_xe | 17.9.6a | Yes |
| Operating System | cisco | ios_xe | 17.10.1 | Yes |
| Operating System | cisco | ios_xe | 17.10.1b | Yes |
| Operating System | cisco | ios_xe | 17.11.1 | Yes |
| Operating System | cisco | ios_xe | 17.11.99sw | Yes |
| Operating System | cisco | ios_xe | 17.12.1 | Yes |
| Operating System | cisco | ios_xe | 17.12.1z3 | Yes |
| Operating System | cisco | ios_xe | 17.12.2 | Yes |
| Operating System | cisco | ios_xe | 17.12.3 | Yes |
| Operating System | cisco | ios_xe | 17.12.4 | Yes |
| Operating System | cisco | ios_xe | 17.13.1 | Yes |
| Operating System | cisco | ios_xe | 17.14.1 | Yes |
| Operating System | cisco | ios_xe | 17.15.1 | Yes |
| Operating System | cisco | ios_xe | 17.15.2 | Yes |
| Operating System | cisco | ios_xe | 17.15.2a | Yes |
| Operating System | cisco | ios_xe | 17.15.2b | Yes |
| Operating System | cisco | ios_xe | 17.16.1 | Yes |
| Hardware | cisco | catalyst_9200 | - | No |
| Hardware | cisco | catalyst_9200cx | - | No |
| Hardware | cisco | catalyst_9200l | - | No |
| Hardware | cisco | catalyst_9300 | - | No |
| Hardware | cisco | catalyst_9300-24p-a | - | No |
| Hardware | cisco | catalyst_9300-24p-e | - | No |
| Hardware | cisco | catalyst_9300-24s-a | - | No |
| Hardware | cisco | catalyst_9300-24s-e | - | No |
| Hardware | cisco | catalyst_9300-24t-a | - | No |
| Hardware | cisco | catalyst_9300-24t-e | - | No |
| Hardware | cisco | catalyst_9300-24u-a | - | No |
| Hardware | cisco | catalyst_9300-24u-e | - | No |
| Hardware | cisco | catalyst_9300-24ux-a | - | No |
| Hardware | cisco | catalyst_9300-24ux-e | - | No |
| Hardware | cisco | catalyst_9300-48p-a | - | No |
| Hardware | cisco | catalyst_9300-48p-e | - | No |
| Hardware | cisco | catalyst_9300-48s-a | - | No |
| Hardware | cisco | catalyst_9300-48s-e | - | No |
| Hardware | cisco | catalyst_9300-48t-a | - | No |
| Hardware | cisco | catalyst_9300-48t-e | - | No |
| Hardware | cisco | catalyst_9300-48u-a | - | No |
| Hardware | cisco | catalyst_9300-48u-e | - | No |
| Hardware | cisco | catalyst_9300-48un-a | - | No |
| Hardware | cisco | catalyst_9300-48un-e | - | No |
| Hardware | cisco | catalyst_9300-48uxm-a | - | No |
| Hardware | cisco | catalyst_9300-48uxm-e | - | No |
| Hardware | cisco | catalyst_9300l | - | No |
| Hardware | cisco | catalyst_9300l-24p-4g-a | - | No |
| Hardware | cisco | catalyst_9300l-24p-4g-e | - | No |
| Hardware | cisco | catalyst_9300l-24p-4x-a | - | No |
| Hardware | cisco | catalyst_9300l-24p-4x-e | - | No |
| Hardware | cisco | catalyst_9300l-24t-4g-a | - | No |
| Hardware | cisco | catalyst_9300l-24t-4g-e | - | No |
| Hardware | cisco | catalyst_9300l-24t-4x-a | - | No |
| Hardware | cisco | catalyst_9300l-24t-4x-e | - | No |
| Hardware | cisco | catalyst_9300l-48p-4g-a | - | No |
| Hardware | cisco | catalyst_9300l-48p-4g-e | - | No |
| Hardware | cisco | catalyst_9300l-48p-4x-a | - | No |
| Hardware | cisco | catalyst_9300l-48p-4x-e | - | No |
| Hardware | cisco | catalyst_9300l-48t-4g-a | - | No |
| Hardware | cisco | catalyst_9300l-48t-4g-e | - | No |
| Hardware | cisco | catalyst_9300l-48t-4x-a | - | No |
| Hardware | cisco | catalyst_9300l-48t-4x-e | - | No |
| Hardware | cisco | catalyst_9300l_stack | - | No |
| Hardware | cisco | catalyst_9300lm | - | No |
| Hardware | cisco | catalyst_9300x | - | No |
| Hardware | cisco | catalyst_9400 | - | No |
| Hardware | cisco | catalyst_9400_supervisor_engine-1 | - | No |
| Hardware | cisco | catalyst_9407r | - | No |
| Hardware | cisco | catalyst_9410r | - | No |
| Hardware | cisco | catalyst_9500 | - | No |
| Hardware | cisco | catalyst_9500h | - | No |
| Hardware | cisco | catalyst_9600 | - | No |
| Hardware | cisco | catalyst_9600_supervisor_engine-1 | - | No |
| Hardware | cisco | catalyst_9600x | - | 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.