CVE-2026-20188
📛 CVE Title
Cisco Crosswork Network Controller and Cisco Network Services Orchestrator Advisory
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.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- cisco
- CVSS severity
- NONE
- CVSS score
- 0.0 / 10
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N- Effective score
- 0.0 / 10 NONE source: CNA overview
- CWE(s)
-
CWE-400 - Reserved
- 2025-10-08
- Published
- 2026-05-06 18:15 UTC
- Last updated
- 2026-05-14 18:30 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/20xxx/CVE-2026-20188.json
- Linked Threat
- CVE-2026-20188 — CVE-2026-20188
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2026-05-06 17:16:21 UTC
- NVD last modified
- 2026-05-14 17:16:19 UTC
- NVD CVSS v3.1
- 0.0 / 10 NONE source: psirt@cisco.com
- NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N- Exploitability subscore
- 3.9 / 10
- Impact subscore
- 0.0 / 10
- EPSS score
- 0.0004 (probability of exploitation in next 30 days)
- EPSS percentile
- 11.21% vs all CVEs — higher = more likely to be exploited, as of 2026-05-25
NVD / KEV / EPSS data refreshed 2026-05-25 20:09 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2026-27860 - Assigner
- cisco
- Published
- May 6, 2026, 4:15:37 PM
- Updated
- May 14, 2026, 4:30:22 PM
- EUVD-reported EPSS
- 0.0400
- Vendors
- Cisco
- Products
-
Cisco Network Services Orchestrator (5.7.6.3)Cisco Network Services Orchestrator (5.7.10.1)Cisco Network Services Orchestrator (5.7.17.1)Cisco Network Services Orchestrator (5.7.19)Cisco Crosswork Network Change Automation (2.0.2)Cisco Crosswork Network Change Automation (4.5.2)Cisco Network Services Orchestrator (5.6.7.2)Cisco Network Services Orchestrator (5.7.8.1)Cisco Network Services Orchestrator (6.0.10)Cisco Network Services Orchestrator (5.7.2)Cisco Network Services Orchestrator (5.7.13)Cisco Crosswork Network Change Automation (4.5.1)Cisco Crosswork Network Change Automation (5.0.0)Cisco Crosswork Network Change Automation (6.0.0)Cisco Network Services Orchestrator (5.8.5)Cisco Network Services Orchestrator (6.0.4)Cisco Network Services Orchestrator (6.0)Cisco Network Services Orchestrator (5.7.16)Cisco Network Services Orchestrator (5.8.2.1)Cisco Crosswork Network Change Automation (4.1.3)Cisco Crosswork Network Change Automation (7.0.3)Cisco Network Services Orchestrator (5.6.11)Cisco Crosswork Network Change Automation (5.0.4)Cisco Network Services Orchestrator (5.6.6.1)Cisco Network Services Orchestrator (5.7)Cisco Network Services Orchestrator (5.7.6.1)Cisco Network Services Orchestrator (5.8.8)Cisco Network Services Orchestrator (6.0.8)Cisco Network Services Orchestrator (5.8.13)Cisco Network Services Orchestrator (6.1.1)Cisco Network Services Orchestrator (6.0.7)Cisco Network Services Orchestrator (5.7.12)Cisco Network Services Orchestrator (5.6.8)Cisco Network Services Orchestrator (5.7.6)Cisco Crosswork Network Change Automation (4.0.0)Cisco Network Services Orchestrator (5.7.17)Cisco Network Services Orchestrator (5.7.10)Cisco Network Services Orchestrator (5.6.6)Cisco Network Services Orchestrator (5.7.14)Cisco Network Services Orchestrator (5.7.6.2)Cisco Network Services Orchestrator (5.7.2.1)Cisco Crosswork Network Change Automation (7.0.0)Cisco Network Services Orchestrator (5.7.9)Cisco Crosswork Network Change Automation (4.5.0)Cisco Network Services Orchestrator (6.0.3)Cisco Network Services Orchestrator (5.7.8)Cisco Network Services Orchestrator (5.8.11)Cisco Network Services Orchestrator (5.7.7)Cisco Network Services Orchestrator (5.8)Cisco Network Services Orchestrator (5.8.12)Cisco Network Services Orchestrator (5.8.1)Cisco Network Services Orchestrator (5.6.14.3)Cisco Network Services Orchestrator (5.7.5.1)Cisco Crosswork Network Change Automation (5.0.2)Cisco Network Services Orchestrator (6.0.1)Cisco Network Services Orchestrator (5.6.14)Cisco Network Services Orchestrator (5.6.7.1)Cisco Network Services Orchestrator (5.8.13.1)Cisco Network Services Orchestrator (5.6.14.1)Cisco Network Services Orchestrator (6.0.1.1)Cisco Network Services Orchestrator (5.7.15.1)Cisco Network Services Orchestrator (6.0.2)Cisco Network Services Orchestrator (5.7.3)Cisco Network Services Orchestrator (6.1)Cisco Network Services Orchestrator (5.8.6)Cisco Network Services Orchestrator (5.6.13)Cisco Network Services Orchestrator (5.7.15)Cisco Network Services Orchestrator (5.8.2)Cisco Network Services Orchestrator (6.0.13)Cisco Crosswork Network Change Automation (7.1.3)Cisco Network Services Orchestrator (5.7.11)Cisco Crosswork Network Change Automation (4.1.4)Cisco Network Services Orchestrator (5.7.9.1)Cisco Network Services Orchestrator (5.6.7)Cisco Network Services Orchestrator (6.0.5)Cisco Network Services Orchestrator (5.7.18)Cisco Network Services Orchestrator (5.8.10)Cisco Crosswork Network Change Automation (7.1.0)Cisco Network Services Orchestrator (5.7.1.1)Cisco Network Services Orchestrator (5.8.7)Cisco Network Services Orchestrator (5.7.1)Cisco Network Services Orchestrator (6.0.12)Cisco Network Services Orchestrator (5.7.4)Cisco Network Services Orchestrator (5.7.10.2)Cisco Network Services Orchestrator (5.6.9)Cisco Network Services Orchestrator (6.0.9)Cisco Network Services Orchestrator (5.6.10)Cisco Network Services Orchestrator (5.7.19.1)Cisco Network Services Orchestrator (5.6.8.1)Cisco Crosswork Network Change Automation (1.0.0)Cisco Network Services Orchestrator (5.7.5)Cisco Network Services Orchestrator (6.0.6)Cisco Network Services Orchestrator (5.8.4)Cisco Crosswork Network Change Automation (4.1.0)Cisco Network Services Orchestrator (5.8.3)Cisco Network Services Orchestrator (6.0.11)Cisco Crosswork Network Change Automation (3.0.0)Cisco Network Services Orchestrator (5.6.12)Cisco Network Services Orchestrator (5.8.9)
ENISA 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.
Affected products (1)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| Cisco | Cisco Crosswork Network Change Automation | — | — |
Vendor references (1)
References embedded in the original CVE record by the assigning CNA.
MITRE references (1) cveawg.mitre.org
Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.
Web references (5)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
- https://nvd.nist.gov/vuln/detail/CVE-2026-20188 tenable:nvd.nist.gov
- https://www.bleepingcomputer.com/news/security/new-cisco-dos-flaw-requires-manual-reboot-to-revive-devices/ tenable:www.bleepingcomputer.com
- https://www.cve.org/CVERecord?id=CVE-2026-20188 tenable:www.cve.org
- https://www.first.org/epss/ tenable:www.first.org
- https://www.securityweek.com/cisco-patches-high-severity-vulnerabilities-in-enterprise-products/ tenable:www.securityweek.com
NVD-tagged references (1)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
Remediations (17)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:app.opencve.io
Remediation No vendor fix or workaround currently provided. OpenCVE Recommended Actions Apply any Cisco Crosswork Network Change Automation or Cisco Network Services Orchestrator patch that addresses the rate‑limiting issue as soon as it becomes available.
2026-05-23 21:11 UTC -
web:blog.qualys.com
Microsoft has rolled out its March 2026 Patch Tuesday updates, delivering a fresh batch of security fixes designed to keep Windows environments protected from emerging threats.
2026-05-23 21:11 UTC -
web:cybersecuritytimes.com
Cisco has confirmed that no workarounds exist to address this vulnerability, making patching the sole remediation path. Security researchers and platforms tracking CVE-2026-20188 note that no public proof-of-concept exploit exists and there is no evidence of active exploitation in the wild at this time. Mitigation Organizations running vulnerable versions of Cisco CNC or NSO should act ...
2026-05-23 21:11 UTC -
web:krebsonsecurity.com
Microsoft Corp. today issued security updates to fix more than 80 vulnerabilities in its Windows operating systems and software. There are no known "zero-day" or actively exploited vulnerabilities ...
2026-05-23 21:11 UTC -
web:portal.msrc.microsoft.com
The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.
2026-05-23 21:11 UTC -
web:www.bleepingcomputer.com
CISA has ordered U.S. federal agencies to patch a Microsoft Defender privilege escalation flaw (dubbed BlueHammer) that has been exploited in zero-day attacks.
2026-05-23 21:11 UTC -
web:www.pcworld.com
This month's Patch Tuesday includes an actively exploited Office zero-day vulnerability and several critical RCE bugs in Windows and Remote Desktop.
2026-05-23 21:11 UTC -
web:www.techradar.com
CISA confirms two bugs being actively exploited in the wild, as Microsoft releases patches.
2026-05-23 21:11 UTC -
web:www.zdnet.com
Install Microsoft's emergency Windows patch now - what it fixes and why it was rushed out Microsoft issued an out-of-band fix after its latest update introduced a nasty surprise.
2026-05-23 21:11 UTC -
web:zecurit.com
Get the complete breakdown of Microsoft's May 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .
2026-05-23 21:11 UTC -
web:cybersecuritynews.com
Microsoft released its March 2026 Patch Tuesday security update on March 10, 2026 , addressing 78 vulnerabilities across Windows, Microsoft Office, Azure, SQL Server, and .NET. The update includes one actively exploited zero-day vulnerability and multiple Critical-rated flaws demanding immediate attention from security teams. The most urgent fix this month is CVE - 2026 -21262, the sole zero-day ...
2026-05-26 02:48 UTC -
web:isc.sans.edu
SANS Internet Storm Center - A global cooperative cyber threat / internet security monitor and alert system. Featuring daily handler diaries with summarizing and analyzing new threats to networks and internet security events.
2026-05-26 02:48 UTC -
web:www.computerworld.com
Each month, the team at Readiness analyzes the latest Patch Tuesday updates from Microsoft and provides detailed, actionable testing guidance. The company's Patch Tuesday release for February ...
2026-05-26 02:48 UTC -
web:www.crowdstrike.com
Microsoft's March 2026 Patch Tuesday addresses 82 CVEs , featuring eight Critical vulnerabilities.
2026-05-26 02:48 UTC -
web:www.msn.com
Original story: Microsoft has released an emergency patch for a vulnerability in the company's Office programs that's already being exploited by hackers.
2026-05-26 02:48 UTC -
web:www.techrepublic.com
Microsoft's March Patch Tuesday fixes 78 vulnerabilities, including Office preview pane flaws, an Excel Copilot data leak risk, and an AI-discovered 9.8 severity bug.
2026-05-26 02:48 UTC -
web:www.thehackerwire.com
To protect against CVE-2026-20188 , you should: (1) Apply the latest security patches from the vendor, (2) Check official security advisories for specific remediation steps, (3) Update affected software to the latest version, and (4) Monitor your systems for any signs of exploitation.
2026-05-26 02:48 UTC
AI Forensic Analysis
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Raw JSON
The full cvelistV5 record. Download as CVE-2026-20188.json.
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