Overview
A vulnerability in the UDP processing code of Cisco IOS and IOS XE 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 denial of service.
https://nvd.nist.gov/vuln/detail/CVE-2017-6627
Key Details
| Property | Value |
|---|---|
| CVE ID | CVE-2017-6627 |
| Vendor / Product | Cisco — IOS and IOS XE Software |
| NVD Published | 2017-09-07 |
| NVD Last Modified | 2025-10-22 |
| CVSS 3.1 Score | 7.5 |
| CVSS 3.1 Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Severity | HIGH |
| CWE | CWE-399 |
| CISA KEV Added | 2022-03-03 |
| CISA KEV Deadline | 2022-03-24 |
| Known Ransomware Use | No |
CVSS 3.1 Breakdown
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Required Action
CISA BOD 22-01 Deadline: 2022-03-24.
Apply updates per vendor instructions.
Timeline
| Date | Event |
|---|---|
| 2022-03-03 | Added to CISA Known Exploited Vulnerabilities catalog |
| 2022-03-24 | CISA BOD 22-01 remediation deadline |
References
| Resource | Type |
|---|---|
| NVD — CVE-2017-6627 | Vulnerability Database |
| CISA KEV Catalog Entry | US Government |