Resource exhaustion in Crosswork Network Controller and Cisco Network Services Orchestrator (NSO) - CVE-2026-20188

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Main Vulnerability Database Vulnerabilities #VU130437

Resource exhaustion in Crosswork Network Controller and Cisco Network Services Orchestrator (NSO) - CVE-2026-20188

Published: May 7, 2026


Vulnerability identifier: #VU130437
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-20188
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Crosswork Network Controller
Cisco Network Services Orchestrator (NSO)

Detailed vulnerability description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources in the connection-handling mechanism. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.


How to mitigate CVE-2026-20188

Install updates from vendor's website.

Sources