CVE-2026-20326
Cisco Nexus Dashboard Software Security Hardening Release September 2026 - Missing Authentication for Critical Function
Public exploit available. Not confirmed exploited in the wild yet. No fix published yet.
What to do
No fixed build or workaround is published yet. Limit exposure and watch for a patch.
Steps
Written by AI from the record- Check whether your organization runs Cisco Nexus Dashboard and whether its management interface can be reached from the internet or untrusted networks.
- Ask Cisco or your support provider for the fixed Cisco Nexus Dashboard release for CVE-2026-20326; no fixed version has been published in the available findings.
- Until a fix is available, restrict access to the dashboard to trusted administrator networks and remove public internet exposure.
- Review administrator activity and configuration changes for anything unexpected.
What it is
From the CVE record
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Nexus Dashboard engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20326 are related to missing authentication for critical function issues that are grouped under the Common Weakness Enumeration (CWE) CWE-306.
In plain language
Written by AI from the recordCisco Nexus Dashboard has a serious access-control flaw that can let an outsider take over affected systems; small businesses using it should treat this as urgent.
Unauthenticated network-accessible critical-function vulnerability in Cisco Nexus Dashboard caused by missing authentication (CWE-306), with public exploit availability and no documented fixed release.
If you're affected
- Network management takeover
- Configuration changes
- Service disruption
- Sensitive network data exposure
- Ransomware risk
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
0 sources with a proof of concept or module.
Exploit links, PoCs and Metasploit modules after sign-in- EPSS
0.4% chance of exploitation activity in the next 30 days, which ranks it in the 30th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
6 events over 2 days, from the signal feeds we watch.
- Record updatedrecord updated
- Publishedweakness classified, att&ck mapped, record updated
Affected products
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Scored 9.8 by NVD.
How it is reached
- Attack Vector NetworkExploitable remotely over the network without any special conditions
- Attack Complexity LowNo special conditions — the attack can be reliably reproduced
- Privileges Required NoneNo authentication required — anyone can exploit this
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality HighTotal information disclosure — all data in the component is compromised
- Integrity HighTotal loss of integrity — attacker can modify any data in the component
- Availability HighTotal denial of service — the component is completely unavailable
Weaknesses
ATT&CK techniques
Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.
Sources
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