CVE-2026-20188— Cisco Crosswork Network Controller and Cisco Network Services Orchestrator Advisory
Possible ATT&CK Techniques 1AI
T1499 · Endpoint Denial of ServiceAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Cisco | Cisco Crosswork Network Change Automation | any | unaffected |
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I. Basic Information for CVE-2026-20188
Vulnerability Information
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Vulnerability Title
Cisco Crosswork Network Controller and Cisco Network Services Orchestrator Advisory
Source: NVD (National Vulnerability Database)
Vulnerability Description
Following the initial publication of the Security Advisory about a denial of service (DoS) condition in Cisco Crosswork Network Controller and Cisco Network Services Orchestrator (NSO), additional information has been made available to the Cisco Product Security Incident Response Team (PSIRT). Upon further analysis, the Cisco PSIRT has reclassified this issue as a customer-configurable, resource management issue rather than a security vulnerability.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco Network Services Orchestrator和Cisco Crosswork Network Controller 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Network Services Orchestrator（NSO）和Cisco Crosswork Network Controller都是美国思科（Cisco）公司的产品。Cisco Network Services Orchestrator是一套网络自动化服务解决方案。Cisco Crosswork Network Controller是一个网络控制器。 Cisco Crosswork Network Controller和Cisco Network Services Orchestra
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
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Cisco | Cisco Crosswork Network Change Automation | - | - |
II. Public POCs for CVE-2026-20188
| # | POC Description | Source Link | Shenlong Link |
|---|
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Advisory · 1
Same Patch Batch · Cisco · 2026-05-06 · 12 CVEs total
| CVE-2026-20034 | 8.8 HIGH | Cisco Unity Connection Remote Code Execution Vulnerability |
| CVE-2026-20185 | 7.7 HIGH | Cisco SG350 and SG350X Series Managed Switches SNMP Denial of Service Vunerability |
| CVE-2026-20167 | 7.7 HIGH | Cisco IoT Field Network Director Remote Device Denial of Service Vulnerability |
| CVE-2026-20035 | 7.2 HIGH | Cisco Unity Connection Server-Side Request Forgery Vulnerability |
| CVE-2026-20168 | 6.5 MEDIUM | Cisco IoT Field Network Director Path Traversal Vulnerability |
| CVE-2026-20169 | 6.4 MEDIUM | Cisco IoT Field Network Director Command Injection Vulnerability |
| CVE-2026-20219 | 5.4 MEDIUM | Cisco Slido 安全漏洞 |
| CVE-2026-20195 | 5.3 MEDIUM | Cisco Identity Services Engine Observable Response Discrepancy Vulnerability |
| CVE-2026-20193 | 4.3 MEDIUM | Cisco Identity Services Engine Authentication Bypass Vulnerability |
| CVE-2026-20189 | 4.3 MEDIUM | Cisco Prime Infrastructure Information Disclosure Vulnerability |
| CVE-2026-20172 | 4.3 MEDIUM | Cisco Enterprise Chat and Email Lite Agent File Upload Vulnerability |
IV. Related Vulnerabilities
Same vendor: Cisco
- CVE-2026-20224
Cisco Catalyst SD-WAN Manager XML External Entity Injection - CVE-2026-20210
Cisco Catalyst SD-WAN Manager Privilege Escalation Vulnerabi - CVE-2026-20209
Cisco Catalyst SD-WAN Manager Privilege Escalation Vulnerabi - CVE-2026-20182
Cisco Catalyst SD-WAN Controller Authentication Bypass Vulne - CVE-2026-20219
Cisco Slido 安全漏洞
Same weakness: CWE-400
- CVE-2026-24215
NVIDIA Triton Inference Server DALI后端拒绝服务漏洞 - CVE-2026-8769
vercel ai provider-utils response-handler.ts createJsonError - CVE-2026-42304
Twisted: Denial of Service (DoS) in twisted.names via Crafte - CVE-2026-44248
Netty: Resource exhaustion in MqttDecoder - CVE-2026-42587
Netty: HttpContentDecompressor maxAllocation bypass via Cont
V. Comments for CVE-2026-20188
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