Cisco NX-OS Software Security Hardening Release: October 2026 - Improper Access Control Vulnerabilities (Cisco Cisco NX-OS Software)
At a glance
- Source
- NVD
- EPSS
- EPSS 3.59 % · percentile 89 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- cisco
- NVD status
- Awaiting Analysis
Description
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco NX-OS 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-2026-76455 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) CWE-284.
Weaknesses (CWE)
- CWE-284 — Improper Access Control
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | cisco |
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · psirt@cisco.com (Secondary) |
European references
- ENISA EUVD · EUVD-2026-94460
- GCVE · GCVE-0-2026-76455
CERT-FR advisories
- CERTFR-2026-AVI-1282 — Multiples vulnérabilités dans les produits Cisco · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Cisco · Cisco NX-OS Software | affected 8.2(5) ; affected 7.3(5)D1(1) ; affected 8.4(2) ; affected 8.4(3) ; affected 9.2(3) ; affected 8.2(1) |
| Cisco · Cisco NX-OS System Software in ACI Mode | affected 15.2(1g) ; affected 15.2(2e) ; affected 15.2(2f) ; affected 15.2(2g) ; affected 15.2(2h) ; affected 15.2(3f) |
| Cisco · Cisco Unified Computing System (Managed) | affected 4.0(1a) ; affected 4.1(1d) ; affected 4.0(4f) ; affected 4.0(4c) ; affected 4.0(2b) ; affected 4.1(2a) |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |