CVE-2026-20326: Cisco Nexus Dashboard Software Security Hardening Release September 2026 - Missing Authentication for Critical Function
- Is it exploited?
Not on CISA's list. CISA has not added it to the Known Exploited Vulnerabilities catalog as of . If CISA adds it, this page shows it as known exploited.
- How likely is exploitation in the next 30 days?
- 0.6%
Up from 0.4% on .
EPSS score, percentile 47.6 of all scored records. A probability estimated by FIRST, not a report of exploitation.
- How severe?
- 9.8 Critical
CVSS v3.1 base score, given by the CNA
- What should I do?
CISA has set no required action, because the vulnerability is not in KEV.
The CVE record links no vendor advisory, patch or mitigation.
- Which versions are affected?
Affected
- 2.1(1d)
- 2.1(1e)
- 2.1(2d)
- 2.2(1h)
- 2.2(1e)
- 2.2(2d)
and 6 more in the table below
Source: CISA KEV 2026.10.29, as of ; FIRST EPSS, as of ; CVE List, as of . About the data.
What to do
Advisories and patches
The CVE record links no vendor advisory, patch or mitigation.
This summary is based on the CVE record as of . Check the vendor's advisory before you act: affected versions and fixes can change.
Affected products and versions
As listed in the CVE record.
| Status | Versions |
|---|---|
| Affected | 2.1(1d) |
| Affected | 2.1(1e) |
| Affected | 2.1(2d) |
| Affected | 2.2(1h) |
| Affected | 2.2(1e) |
| Affected | 2.2(2d) |
| Affected | 2.1(2f) |
| Affected | 2.3(1c) |
| Affected | 2.3(2b) |
| Affected | 2.3(2c) |
| Affected | 2.3(2d) |
| Affected | 2.3(2e) |
Versions not listed are: unknown.
And 17 more version entries in the CVE record.
Source: CVE List, as of . About the data.
About this vulnerability
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 fun…
Summary: CVE record, as of .
- CISA has not added CVE-2026-20326 to its Known Exploited Vulnerabilities (KEV) catalog, as of 29 Oct 2026.
- The CVE record was published on 16 Sep 2026.
- The CVE record carries a CVSS v3.1 base score of 9.8 (Critical), given by its CNA.
- FIRST's EPSS model puts the probability of exploitation in the next 30 days at 0.6% (percentile 47.6), as of 29 Oct 2026. EPSS is a statistical estimate, not a report of exploitation.
- CISA's SSVC assessment in the CVE record: exploitation none, automatable no, technical impact total.
Source: CISA KEV 2026.10.29, as of ; CVE List, as of ; FIRST EPSS, as of . About the data.
Description
Cisco Nexus Dashboard Software Security Hardening Release September 2026 - Missing Authentication for Critical Function
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.
Source: CVE List, as of . About the data.
Weakness
CWE-306
CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.
Timeline
| Date | Event |
|---|---|
| CVE record published | |
| CVE record last updated |
References
1
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