A vulnerability in the UDP processing code of Cisco IOS 15.1, 15.2, and 15.4 and IOS XE 3.14 through 3.18 could allow an unauthenticated, remote attacker to cause the input queue of an affected system to hold UDP packets, causing an interface queue wedge and a denial of service (DoS) condition. The vulnerability is due to Cisco IOS Software application changes that create UDP sockets and leave the sockets idle without closing them. An attacker could exploit this vulnerability by sending UDP packets with a destination port of 0 to an affected device. A successful exploit could allow the attacker to cause UDP packets to be held in the input interfaces queue, resulting in a DoS condition. The input interface queue will stop holding UDP packets when it receives 250 packets. Cisco Bug IDs: CSCup10024, CSCva55744, CSCva95506.
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 2 products from cisco, from cisco 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.
2017-09-07T21:29:00.660
2025-10-22T00:16:07.947
Deferred
CVSSv3.1: 7.5 (HIGH)
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 | ios | 15.1\(2\)gc | Yes |
| Operating System | cisco | ios | 15.1\(2\)gc1 | Yes |
| Operating System | cisco | ios | 15.1\(2\)gc2 | Yes |
| Operating System | cisco | ios | 15.1\(4\)gc | Yes |
| Operating System | cisco | ios | 15.1\(4\)gc1 | Yes |
| Operating System | cisco | ios | 15.1\(4\)gc2 | Yes |
| Operating System | cisco | ios | 15.2\(1\)gc | Yes |
| Operating System | cisco | ios | 15.2\(1\)gc1 | Yes |
| Operating System | cisco | ios | 15.2\(1\)gc2 | Yes |
| Operating System | cisco | ios | 15.2\(2\)gc | Yes |
| Operating System | cisco | ios | 15.2\(3\)gc | Yes |
| Operating System | cisco | ios | 15.2\(3\)gc1 | Yes |
| Operating System | cisco | ios | 15.2\(3r\)gca | Yes |
| Operating System | cisco | ios | 15.2\(4\)gc | Yes |
| Operating System | cisco | ios | 15.2\(4\)gc1 | Yes |
| Operating System | cisco | ios | 15.2\(4\)gc2 | Yes |
| Operating System | cisco | ios | 15.2\(4\)gc3 | Yes |
| Operating System | cisco | ios | 15.4\(1\)t | Yes |
| Operating System | cisco | ios | 15.4\(1\)t1 | Yes |
| Operating System | cisco | ios | 15.4\(1\)t2 | Yes |
| Operating System | cisco | ios | 15.4\(1\)t3 | Yes |
| Operating System | cisco | ios | 15.4\(1\)t4 | Yes |
| Operating System | cisco | ios | 15.4\(2\)t | Yes |
| Operating System | cisco | ios | 15.4\(2\)t1 | Yes |
| Operating System | cisco | ios | 15.4\(2\)t2 | Yes |
| Operating System | cisco | ios | 15.4\(3\)m | Yes |
| Operating System | cisco | ios | 15.4\(3\)m1 | Yes |
| Operating System | cisco | ios | 15.4\(3\)m2 | Yes |
| Operating System | cisco | ios | 15.4\(3\)m2.2 | Yes |
| Operating System | cisco | ios | 15.4\(3\)m3 | Yes |
| Operating System | cisco | ios | 15.4\(3\)m4 | Yes |
| Operating System | cisco | ios | 15.4\(3\)m5 | Yes |
| Operating System | cisco | ios | 15.4\(3\)m6 | Yes |
| Operating System | cisco | ios | 15.4\(3\)m6a | Yes |
| Operating System | cisco | ios | 15.4\(3\)m7 | Yes |
| Operating System | cisco | ios_xe | 3.14.0s | Yes |
| Operating System | cisco | ios_xe | 3.14.1s | Yes |
| Operating System | cisco | ios_xe | 3.14.2s | Yes |
| Operating System | cisco | ios_xe | 3.14.3s | Yes |
| Operating System | cisco | ios_xe | 3.14.4s | Yes |
| Operating System | cisco | ios_xe | 3.15.0s | Yes |
| Operating System | cisco | ios_xe | 3.15.1cs | Yes |
| Operating System | cisco | ios_xe | 3.15.1s | Yes |
| Operating System | cisco | ios_xe | 3.15.2s | Yes |
| Operating System | cisco | ios_xe | 3.15.3s | Yes |
| Operating System | cisco | ios_xe | 3.15.4s | Yes |
| Operating System | cisco | ios_xe | 3.16.0cs | Yes |
| Operating System | cisco | ios_xe | 3.16.0s | Yes |
| Operating System | cisco | ios_xe | 3.16.1as | Yes |
| Operating System | cisco | ios_xe | 3.16.1s | Yes |
| Operating System | cisco | ios_xe | 3.16.2as | Yes |
| Operating System | cisco | ios_xe | 3.16.2bs | Yes |
| Operating System | cisco | ios_xe | 3.16.2s | Yes |
| Operating System | cisco | ios_xe | 3.16.3as | Yes |
| Operating System | cisco | ios_xe | 3.16.3s | Yes |
| Operating System | cisco | ios_xe | 3.16.4as | Yes |
| Operating System | cisco | ios_xe | 3.16.4bs | Yes |
| Operating System | cisco | ios_xe | 3.16.4ds | Yes |
| Operating System | cisco | ios_xe | 3.16.4s | Yes |
| Operating System | cisco | ios_xe | 3.16.5s | Yes |
| Operating System | cisco | ios_xe | 3.16.6s | Yes |
| Operating System | cisco | ios_xe | 3.17.0s | Yes |
| Operating System | cisco | ios_xe | 3.17.1as | Yes |
| Operating System | cisco | ios_xe | 3.17.1s | Yes |
| Operating System | cisco | ios_xe | 3.17.3s | Yes |
| Operating System | cisco | ios_xe | 3.18.0as | Yes |
| Operating System | cisco | ios_xe | 3.18.0s | Yes |
| Operating System | cisco | ios_xe | 3.18.1s | Yes |
| Operating System | cisco | ios_xe | 3.18.2s | Yes |
| Operating System | cisco | ios_xe | 3.18.3s | Yes |
| Operating System | cisco | ios_xe | 3.18.3vs | 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.