CVE-2018-0173
Cisco IOS and IOS XE Software Improper Input Validation Vulnerability
- 대응 우선순위
- 최우선
- CVSS
- 8.6
- EPSS
- 7.61% 백분위 93.8% · 2026.06.27 기준
- CISA KEV
- 등록
- 조치 기한
- 2022.03.17
- 공개일
- 2018.03.29
CISA KEV에 등록된 실제 악용 확인 취약점
A vulnerability in the Cisco IOS Software and Cisco IOS XE Software function that restores encapsulated option 82 information in DHCP Version 4 (DHCPv4) packets could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a Relay Reply denial of service (DoS) condition. The vulnerability exists because the affected software performs incomplete input validation of encapsulated option 82 information that it receives in DHCPOFFER messages from DHCPv4 servers. An attacker could exploit this vulnerability by sending a crafted DHCPv4 packet to an affected de...
공급사 Cisco
제품 IOS and IOS XE Software
영향 버전 Cisco IOS and IOS XE, denali-16.3.4, <= 15.2\(6\)e0a, <= 15.2\(4a\)ea5
수정 버전 공식 출처에서 확인 필요
Apply updates per vendor instructions.
조치 기한: 2022.03.17CVSS 벡터 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CWE CWE-20
KEV 등록일 2022.03.03
랜섬웨어 캠페인 사용 미확인
CISA 비고 https://nvd.nist.gov/vuln/detail/CVE-2018-0173
EPSS 데이터 기준일 2026.06.27