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CVE-2026-20188— Cisco Crosswork Network Controller and Cisco Network Services Orchestrator Advisory

Quick assessment

Affected
Cisco Cisco Crosswork Network Change Automation
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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

EPSS 0.31% · P21

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
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

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III. Intelligence Information for CVE-2026-20188

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Vendor Advisories for CVE-2026-20188 (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 product: Cisco Crosswork Network Change Automation
Same vendor: Cisco
Same weakness: CWE-400

V. Comments for CVE-2026-20188

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