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I. Basic Information for CVE-2026-20033
Vulnerability Information

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Vulnerability Title
Cisco NX-OS Software Denial of Service Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in Cisco Nexus 9000 Series Fabric Switches in ACI mode could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient validation when processing specific Ethernet frames. An attacker could exploit this vulnerability by sending a crafted Ethernet frame to the management interface of an affected device. A successful exploit could allow the attacker to cause the device to reload unexpectedly, resulting in a DoS condition. Note: Only the out-of-band (OOB) management interface is affected.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用不正确的长度值访问缓冲区
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco Nexus 9000 Series Fabric Switches 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Nexus 9000 Series Fabric Switches是美国思科(Cisco)公司的一款9000系列光纤交换机。 Cisco Nexus 9000 Series Fabric Switches存在安全漏洞,该漏洞源于处理特定以太网帧时验证不足,可能导致设备意外重新加载,造成拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
CiscoCisco NX-OS System Software in ACI Mode 15.2(1g) -
II. Public POCs for CVE-2026-20033
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III. Intelligence Information for CVE-2026-20033
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IV. Related Vulnerabilities
V. Comments for CVE-2026-20033

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