CVE-2026-20188— 思科Crosswork网络控制器及NSO连接耗尽拒绝服务漏洞
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一、 漏洞 CVE-2026-20188 基础信息
漏洞信息
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Vulnerability Title
Cisco Crosswork Network Controller and Cisco Network Services Orchestrator Connection Exhaustion Denial of Service Vulnerability
来源: 美国国家漏洞数据库 NVD
Vulnerability Description
A vulnerability in the connection-handling mechanism of Cisco Crosswork Network Controller (CNC) and Cisco Network Services Orchestrator (NSO) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected system. This vulnerability is due to an inadequate implementation of rate-limiting on incoming network connections. An attacker could exploit this vulnerability by sending a large number of connection requests to an affected system. A successful exploit could allow the attacker to exhaust available connection resources, causing Cisco CNC and Cisco NSO to become unresponsive and resulting in a DoS condition for legitimate users and dependent services. A manual reboot of the system is required to recover from this condition.
来源: 美国国家漏洞数据库 NVD
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
来源: 美国国家漏洞数据库 NVD
Vulnerability Type
未加控制的资源消耗(资源穷尽)
来源: 美国国家漏洞数据库 NVD
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| Cisco | Cisco Crosswork Network Change Automation | 3.0.0 | - | |
| Cisco | Cisco Network Services Orchestrator | 5.7 | - |
二、漏洞 CVE-2026-20188 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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同批安全公告 · Cisco · 2026-05-06 · 共 12 条
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| CVE-2026-20167 | 7.7 HIGH | Cisco IoT Field Network Director 远程拒绝服务漏洞 |
| CVE-2026-20035 | 7.2 HIGH | Cisco Unity Connection 服务器端请求伪造漏洞 |
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| CVE-2026-20219 | 5.4 MEDIUM | Cisco Slido IDOR漏洞致用户隐私泄露 |
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| CVE-2026-20193 | 4.3 MEDIUM | Cisco Identity Services Engine 身份验证绕过漏洞 |
| CVE-2026-20189 | 4.3 MEDIUM | Cisco Prime Infrastructure 信息泄露漏洞 |
| CVE-2026-20172 | 4.3 MEDIUM | Cisco Enterprise Chat and Email Lite 文件上传漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-20188
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