CVE-2026-20326

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-16. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
44(Track)
EG Risk 44/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
33%
KEV
Not listed

Published

September 16, 2026

Last Modified

September 18, 2026

Advisory Details (1)

Auto-updated Sep 18, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic🔴 Active Exploitation

Cisco Nexus Dashboard Software Security Hardening Release: September 2026

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-ndw1-psFvnrg

Vendor Advisories for CVE-2026-20326(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 29× in last 7d / 29× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-19 05:08 UTCGHSA enrichment
  2. 2026-09-19 01:28 UTCGHSA enrichment
  3. 2026-09-18 21:48 UTCEG score recompute
  4. 2026-09-18 21:48 UTCGHSA enrichment
  5. 2026-09-18 19:27 UTCEPSS rescore
  6. 2026-09-18 18:08 UTCGHSA enrichment
  7. 2026-09-18 14:22 UTCEG score recompute
  8. 2026-09-18 14:22 UTCGHSA enrichment
  9. 2026-09-18 13:44 UTCEG score recompute
  10. 2026-09-18 13:44 UTCGHSA enrichment
  11. 2026-09-18 11:55 UTCGHSA enrichment
  12. 2026-09-18 08:15 UTCGHSA enrichment
  13. 2026-09-18 04:35 UTCEG score recompute
  14. 2026-09-18 04:35 UTCGHSA enrichment
  15. 2026-09-18 04:04 UTCEG score recompute
  16. 2026-09-18 04:04 UTCGHSA enrichment
  17. 2026-09-18 03:24 UTCGHSA enrichment
  18. 2026-09-17 23:44 UTCEG score recompute
  19. 2026-09-17 23:44 UTCGHSA enrichment
  20. 2026-09-17 19:12 UTCGHSA enrichment
  21. 2026-09-17 15:30 UTCGHSA enrichment
  22. 2026-09-17 11:42 UTCGHSA enrichment
  23. 2026-09-17 08:02 UTCGHSA enrichment
  24. 2026-09-17 04:22 UTCGHSA enrichment
  25. 2026-09-17 00:40 UTCEG score recompute
Show 4 more
  1. 2026-09-17 00:40 UTCGHSA enrichment
  2. 2026-09-16 20:32 UTCEG score recompute
  3. 2026-09-16 20:09 UTCEG score recompute
  4. 2026-09-16 20:09 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-20326?
CVE-2026-20326 is a critical vulnerability published on September 16, 2026. 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…
When was CVE-2026-20326 disclosed?
CVE-2026-20326 was first published in the National Vulnerability Database on September 16, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-20326 actively exploited?
CVE-2026-20326 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 67.4% of all scored CVEs.
What is the CVSS score of CVE-2026-20326?
CVE-2026-20326 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-20326?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-20326, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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