📌 이 취약점에 대해 확인된 사실
전부 발행처가 발표한 값입니다. 우리가 계산하거나 판단한 숫자는 하나도 없습니다.
악용 여부
악용 확인
심각도 (발행처 발표값)
높음8.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
악용 확률 (EPSS)
7.7%
📄 원문 그대로
아래 문장은 전부 발행처가 쓴 것입니다. 번역하지 않습니다 — 보안 문서의 오역은 조치를 바꿉니다.
취약점 설명 (NVD)
A vulnerability in the Bidirectional Forwarding Detection (BFD) offload implementation of Cisco Catalyst 4500 Series Switches and Cisco Catalyst 4500-X Series Switches could allow an unauthenticated, remote attacker to cause a crash of the iosd process, causing a denial of service (DoS) condition. The vulnerability is due to insufficient error handling when the BFD header in a BFD packet is incomplete. An attacker could exploit this vulnerability by sending a crafted BFD message to or across an affected switch. A successful exploit could allow the attacker to trigger a reload of the system. This vulnerability affects Catalyst 4500 Supervisor Engine 6-E (K5), Catalyst 4500 Supervisor Engine 6L-E (K10), Catalyst 4500 Supervisor Engine 7-E (K10), Catalyst 4500 Supervisor Engine 7L-E (K10), Catalyst 4500E Supervisor Engine 8-E (K10), Catalyst 4500E Supervisor Engine 8L-E (K10), Catalyst 4500E Supervisor Engine 9-E (K10), Catalyst 4500-X Series Switches (K10), Catalyst 4900M Switch (K5), Catalyst 4948E Ethernet Switch (K5). Cisco Bug IDs: CSCvc40729.
CISA 원문
A vulnerability in the Bidirectional Forwarding Detection (BFD) offload implementation of Cisco Catalyst 4500 Series Switches and Cisco Catalyst 4500-X Series Switches could allow an unauthenticated, remote attacker to cause a crash of the iosd process, causing a denial-of-service (DoS) condition.— CISA KEV · shortDescription 원문
Apply updates per vendor instructions.— CISA KEV · requiredAction 원문
악용 확률 변화
우리가 매일 저장한 EPSS 스냅샷입니다. 원본은 전날 값만 주므로, 이 표는 수집을 시작한 이후만 보여줍니다.
| 기준일 | 확률 | 백분위 |
|---|---|---|
| 2026-11-03 | 7.74% | 94.6% |
| 2026-11-02 | 7.74% | 94.6% |
| 2026-11-01 | 7.74% | 94.6% |
| 2026-10-31 | 7.74% | 94.6% |
| 2026-10-30 | 7.74% | 94.6% |
| 2026-10-29 | 7.74% | 94.6% |
| 2026-10-28 | 7.74% | 94.6% |
| 2026-10-27 | 7.74% | 94.6% |
| 2026-10-26 | 7.74% | 94.6% |
| 2026-10-25 | 7.74% | 94.6% |
| 2026-10-24 | 7.74% | 94.6% |
| 2026-10-23 | 7.74% | 94.6% |
| 2026-10-22 | 7.74% | 94.6% |
| 2026-10-21 | 7.74% | 94.6% |
🧩 같은 약점 유형 — CWE-388
같은 분류의 다른 취약점입니다. 같은 실수가 제품을 가리지 않고 반복됩니다.