Multiple vulnerabilities in the fast reload feature of Cisco IOS XE Software running on Cisco Catalyst 3850, Cisco Catalyst 9300, and Cisco Catalyst 9300L Series Switches could allow an authenticated, local attacker to either execute arbitrary code on the underlying operating system, install and boot a malicious software image, or execute unsigned binaries on an affected device. These vulnerabilities are due to improper checks performed by system boot routines. To exploit these vulnerabilities, the attacker would need privileged access to the CLI of the device. A successful exploit could allow the attacker to either execute arbitrary code on the underlying operating system or execute unsigned code and bypass the image verification check part of the secure boot process. For more information about these vulnerabilities, see the Details section of this advisory.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.7, requiring local system access to exploit with relatively low complexity without requiring user interaction . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 1 product from cisco 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.
2021-03-24T21:15:12.100
2024-11-21T05:44:12.623
Modified
CVSSv3.1: 6.7 (MEDIUM)
AV:L/AC:L/Au:N/C:C/I:C/A:C
3.9
10.0
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | cisco | ios_xe | 16.5.1 | Yes |
| Operating System | cisco | ios_xe | 16.5.1a | Yes |
| 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 | 16.6.4s | 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 | 16.8.1 | 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 | 16.9.2s | Yes |
| Operating System | cisco | ios_xe | 16.9.3 | Yes |
| Operating System | cisco | ios_xe | 16.9.3a | Yes |
| Operating System | cisco | ios_xe | 16.9.3s | Yes |
| Operating System | cisco | ios_xe | 16.9.4 | 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 | 16.11.1c | Yes |
| Operating System | cisco | ios_xe | 16.11.1s | Yes |
| Operating System | cisco | ios_xe | 16.11.2 | Yes |
| Operating System | cisco | ios_xe | 16.12.1 | Yes |
| Operating System | cisco | ios_xe | 16.12.1c | 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 | 16.12.2t | Yes |
| Operating System | cisco | ios_xe | 17.1.1 | Yes |
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.