CVE-2017-6627
악용 확인 Cisco IOS Software and Cisco IOS XE Software UDP Packet Processing Denial-of-Service Vulnerability
악용 여부
악용 확인
심각도 (발행처 발표값)
높음7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
악용 확률 (EPSS)
6.0%
한국어 공식 권고
CISA 원문
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.— CISA KEV · shortDescription 원문
Apply updates per vendor instructions.— CISA KEV · requiredAction 원문
취약점 설명 (NVD 원문)
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.
CWE-399 CWE-404
악용 확률 변화
| 기준일 | 확률 | 백분위 |
|---|---|---|
| 2026-09-07 | 6.04% | 92.9% |
| 2026-09-06 | 6.04% | 92.9% |
| 2026-09-05 | 6.04% | 93.0% |
| 2026-09-04 | 6.04% | 92.9% |