{"id":"CVE-2026-76459","published":"2026-10-07T17:16:58.553","lastModified":"2026-10-09T14:17:22.427","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.\r\n\r\nThe 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.","cvssScore":9.8,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-787"],"vendors":[],"products":[],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-nxosw1-cWzSbtR","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"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.","remediation":"Upgrade to the fixed version 2.590 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","code-execution","network","patch"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-10-09T08:43:46.418Z"}}