A Denial of Service vulnerability in the Telnet remote login functionality of Cisco NX-OS Software running on Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote attacker to cause a Telnet process used for login to terminate unexpectedly and the login attempt to fail. There is no impact to user traffic flowing through the device. Affected Products: This vulnerability affects Cisco Nexus 9000 Series Switches that are running Cisco NX-OS Software and are configured to allow remote Telnet connections to the device. More Information: CSCux46778. Known Affected Releases: 7.0(3)I3(0.170). Known Fixed Releases: 7.0(3)I3(1) 7.0(3)I3(0.257) 7.0(3)I3(0.255) 7.0(3)I2(2e) 7.0(3)F1(1.22) 7.0(3)F1(1).
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.3, 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 limited availability for affected systems. Impacting 20 products from cisco, from cisco, from cisco and 17 others, organizations running these solutions should prioritize assessment and patching.
First disclosed in 2017, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.
2017-03-17T22:59:00.547
2025-04-20T01:37:25.860
Deferred
CVSSv3.0: 5.3 (MEDIUM)
AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | cisco | nx-os | 7.0\(3\)i3\(0.170\) | Yes |
| Hardware | cisco | nexus_92160yc_switch | - | No |
| Hardware | cisco | nexus_92300yc_switch | - | No |
| Hardware | cisco | nexus_92304qc_switch | - | No |
| Hardware | cisco | nexus_9236c_switch | - | No |
| Hardware | cisco | nexus_9272q_switch | - | No |
| Hardware | cisco | nexus_93108tc-ex_switch | - | No |
| Hardware | cisco | nexus_93120tx_switch | - | No |
| Hardware | cisco | nexus_93128tx_switch | - | No |
| Hardware | cisco | nexus_93180lc-ex_switch | - | No |
| Hardware | cisco | nexus_93180yc-ex_switch | - | No |
| Hardware | cisco | nexus_9332pq_switch | - | No |
| Hardware | cisco | nexus_9336pq_aci_spine_switch | - | No |
| Hardware | cisco | nexus_9372px-e_switch | - | No |
| Hardware | cisco | nexus_9372px_switch | - | No |
| Hardware | cisco | nexus_9372tx-e_switch | - | No |
| Hardware | cisco | nexus_9372tx_switch | - | No |
| Hardware | cisco | nexus_9396px_switch | - | No |
| Hardware | cisco | nexus_9396tx_switch | - | No |
| Hardware | cisco | nexus_9508_switch | - | 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.