A vulnerability in the Ident protocol handler of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability exists because the affected software incorrectly handles memory structures, leading to a NULL pointer dereference. An attacker could exploit this vulnerability by opening a TCP connection to specific ports and sending traffic over that connection. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.5, 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 28 products from cisco, from cisco, from cisco and 25 others, organizations running these solutions should prioritize assessment and patching.
First disclosed in 2019, 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.
2019-09-25T20:15:10.417
2024-11-21T04:23:15.310
Modified
CVSSv3.1: 7.5 (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 | fuji-16.7.1 | Yes |
| Operating System | cisco | ios_xe | fuji-16.8.1 | Yes |
| Hardware | cisco | 1100 | - | No |
| Hardware | cisco | 4221 | - | No |
| Hardware | cisco | 4321 | - | No |
| Hardware | cisco | 4351 | - | No |
| Hardware | cisco | 4431 | - | No |
| Hardware | cisco | 4451-x | - | No |
| Hardware | cisco | asr_1000 | - | No |
| Hardware | cisco | asr_1001-hx | - | No |
| Hardware | cisco | asr_1001-x | - | No |
| Hardware | cisco | asr_1002-hx | - | No |
| Hardware | cisco | asr_1002-x | - | No |
| Hardware | cisco | asr_900 | - | No |
| Hardware | cisco | asr_920-10sz-pd | - | No |
| Hardware | cisco | asr_920-12cz-a | - | No |
| Hardware | cisco | asr_920-12cz-d | - | No |
| Hardware | cisco | asr_920-12sz-im | - | No |
| Hardware | cisco | asr_920-24sz-im | - | No |
| Hardware | cisco | asr_920-24sz-m | - | No |
| Hardware | cisco | asr_920-24tz-m | - | No |
| Hardware | cisco | asr_920-4sz-a | - | No |
| Hardware | cisco | asr_920-4sz-d | - | No |
| Hardware | cisco | cloud_services_router_1000v | - | No |
| Hardware | cisco | ncs_4201 | - | No |
| Hardware | cisco | ncs_4202 | - | No |
| Hardware | cisco | ncs_4206 | - | No |
| Hardware | cisco | ncs_4216 | - | No |
| Hardware | cisco | network_convergence_system_520 | - | 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.