{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-76457", "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "state": "PUBLISHED", "assignerShortName": "cisco", "dateReserved": "2026-08-19T12:02:03.637Z", "datePublished": "2026-10-07T16:15:22.604Z", "dateUpdated": "2026-10-07T17:45:39.983Z" }, "containers": { "cna": { "title": "Cisco NX-OS Software Security Hardening Release: October 2026 - Out-of-bounds Read Vulnerabilities", "metrics": [ { "format": "cvssV3_1", "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "baseScore": 8.6, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH" } } ], "descriptions": [ { "lang": "en", "value": "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-2026-76457 are related to out-of-bounds read issues that are grouped under the Common Weakness Enumeration (CWE) CWE-125." } ], "references": [ { "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-nxosw1-cWzSbtR", "name": "cisco-sa-hardening-nxosw1-cWzSbtR" } ], "exploits": [ { "lang": "en", "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory." } ], "source": { "advisory": "cisco-sa-hardening-nxosw1-cWzSbtR", "discovery": "INTERNAL", "defects": [ "CSCwu49564" ] }, "problemTypes": [ { "descriptions": [ { "lang": "en", "description": "Out-of-bounds Read", "type": "cwe", "cweId": "CWE-125" } ] } ], "affected": [ { "vendor": "Cisco", "product": "Cisco NX-OS Software", "versions": [ { 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"status": "affected" }, { "version": "7.3(3)D1(1)", "status": "affected" }, { "version": "8.2(3)", "status": "affected" }, { "version": "8.3(1)", "status": "affected" }, { "version": "8.4(1)", "status": "affected" }, { "version": "8.1(1b)", "status": "affected" }, { "version": "7.3(0)DX(1)", "status": "affected" }, { "version": "7.3(2)D1(1)", "status": "affected" }, { "version": "9.3(1)", "status": "affected" }, { "version": "7.3(2)D1(2)", "status": "affected" }, { "version": "8.2(4)", "status": "affected" }, { "version": "7.3(0)DY(1)", "status": "affected" }, { "version": "9.3(1z)", "status": "affected" }, { "version": "9.2(2)", "status": "affected" }, { "version": "8.1(2a)", "status": "affected" }, { "version": "7.3(2)D1(3)", "status": "affected" }, { "version": "8.1(1a)", "status": "affected" }, { "version": "8.4(1a)", "status": "affected" }, { "version": "9.3(3)", "status": "affected" }, { "version": "7.3(2)D1(1d)", "status": "affected" }, { "version": "9.3(4)", "status": 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"10.6(3o)", "status": "affected" }, { "version": "10.6(3s)", "status": "affected" } ], "defaultStatus": "unknown" }, { "vendor": "Cisco", "product": "Cisco NX-OS System Software in ACI Mode", "versions": [ { "version": "15.2(1g)", "status": "affected" }, { "version": "15.2(2e)", "status": "affected" }, { "version": "15.2(2f)", "status": "affected" }, { "version": "15.2(2g)", "status": "affected" }, { "version": "15.2(2h)", "status": "affected" }, { "version": "15.2(3f)", "status": "affected" }, { "version": "15.2(3e)", "status": "affected" }, { "version": "15.2(3g)", "status": "affected" }, { "version": "15.2(4d)", "status": "affected" }, { "version": "15.2(4e)", "status": "affected" }, { "version": "15.2(5c)", "status": "affected" }, { "version": "15.2(5d)", "status": "affected" }, { "version": "16.0(1g)", "status": "affected" }, { "version": "15.2(5e)", "status": "affected" }, { "version": "15.2(4f)", "status": "affected" }, { "version": "15.2(6e)", "status": "affected" }, { 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"affected" }, { "version": "6.0(1h)", "status": "affected" }, { "version": "4.2(3r)", "status": "affected" }, { "version": "6.0(2c)", "status": "affected" }, { "version": "4.3(6g)", "status": "affected" }, { "version": "6.0(2d)", "status": "affected" }, { "version": "4.3(6h)", "status": "affected" }, { "version": "4.2(3s)", "status": "affected" }, { "version": "4.3(6i)", "status": "affected" } ], "defaultStatus": "unknown" } ], "providerMetadata": { "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco", "dateUpdated": "2026-10-07T16:15:22.604Z" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-10-07T17:45:18.736672Z", "id": "CVE-2026-76457", "options": [ { "Exploitation": "none" }, { "Automatable": "yes" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-07T17:45:39.983Z" } } ] } }