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A vulnerability in the handling of certain Ethernet frames in Cisco IOS XE Software for Catalyst 9000 Series Switches could allow an unauthenticated, adjacent attacker to cause an egress port to beco…

高危 CVSS 7.4
CVECVE-2025-20311
首次发现2026-09-17 20:31 UTC
披露时间2025-09-24 18:15 UTC
最后更新2026-09-17 20:31 UTC
通道状态auto

摘要

A vulnerability in the handling of certain Ethernet frames in Cisco IOS XE Software for Catalyst 9000 Series Switches could allow an unauthenticated, adjacent attacker to cause an egress port to become blocked and drop all outbound traffic. This vulnerability is due to improper handling of crafted Ethernet frames. An attacker could exploit this vulnerability by sending crafted Ethernet frames through an affected switch. A successful exploit could allow the attacker to cause the egress port t…

中文摘要建设中,暂以英文摘要呈现(DR-003 v2)。

深度研判

该漏洞尚未生成深度研判报告(DR-003 v2 AI pipeline 建设中)。

数据来源

  • NVD DATABASE

原始链接

时间线

  1. nvd_ingest NVD