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CVE-2026-76459

9.8 CRITICAL

Published 2026-10-07 · Updated 2026-10-09

AI risk analysis

Summary
CVE-2026-76459 involves out-of-bounds write issues that could allow an attacker to execute arbitrary code, leading to a high severity vulnerability.
Exploitability
Exploitation requires specific conditions and is moderately difficult, as the attacker must be able to send crafted input to the affected system.
Blast radius
If exploited, the vulnerability could result in unauthorized code execution, potentially leading to full system compromise.
Detection
No reliable host or network indicator is derivable from the published description.
Prioritized remediation
Upgrade to the fixed version 2.590 or later.
rcecode-executionnetworkpatch

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-2026-76459 are related to out-of-bounds write issues that are grouped under the Common Weakness Enumeration (CWE) CWE-787.

CVSS vector

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

Weaknesses

CWE-787

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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