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Paper/Archive/CVE-2026-76455

CVE-2026-76455

Cisco Cisco NX-OS Software — Cisco NX-OS Software Security Hardening Release: October 2026 - Improper Access Control Vulnerabilities

EPSS 4%CVSS 9.8
critical.is priorityof 100
47
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 89.4.894 × 2017.9No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Cisco NX-OS Software8.2(5)–CNA
Cisco NX-OS Software7.3(5)D1(1)–CNA
Cisco NX-OS Software8.4(2)–CNA
Cisco NX-OS Software8.4(3)–CNA
Cisco NX-OS Software9.2(3)–CNA
Cisco NX-OS Software8.2(1)–CNA
Cisco NX-OS Software7.3(1)D1(1)–CNA
Cisco NX-OS Software9.2(2v)–CNA
Cisco NX-OS Software7.3(0)D1(1)–CNA
Cisco NX-OS Software7.3(4)D1(1)–CNA
Cisco NX-OS Software9.2(1)–CNA
Cisco NX-OS Software9.2(2t)–CNA

Scores by source

cisco (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refsec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-nxosw1-cWzSbtR