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CVE-2026-76456

8.6 HIGH

Published 2026-10-07 · Updated 2026-10-08

AI risk analysis

Summary
This flaw involves improper input validation, allowing special command elements to be misinterpreted, which could lead to unauthorized access or system compromise.
Exploitability
Exploitation requires specific command input and is moderately difficult, with preconditions including access to the affected command interface.
Blast radius
If exploited, the impact is high, potentially leading to system compromise or data loss.
Detection
No reliable host or network indicator is derivable from the published description.
Prioritized remediation
Upgrade to the fixed version 2026.76456.0 or later.
input-validationcommand-injectionsystem-compromise

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD 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-2026-76456 are related to improper input validation of special elements used in a command issue that are grouped under the Common Weakness Enumeration (CWE) CWE-20.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Weaknesses

CWE-20

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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