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{"affected": [{"affectedData": [{"defaultStatus": "unknown", "product": "UNIVERGE IX-R/IX-V", "vendor": "NEC Corporation", "versions": [{"status": "affected", "version": "All versions from Ver1.1 through Ver1.3, All versions from Ver1.4.21 through Ver1.4.28 and Ver1.5.23"}]}], "source": "psirt-info@cyber.jp.nec.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An authentication bypass vulnerability exists in the WebGUI of Series UNIVERGE IX-R/IX-V. A user could bypass authentication and execute arbitrary CLI commands by tampering with WebGUI messages and sending them to the device via internet."}], "id": "CVE-2026-16876", "lastModified": "2026-09-07T02:17:17.630", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 9.3, "baseSeverity": "CRITICAL", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "psirt-info@cyber.jp.nec.com", "type": "Secondary"}]}, "published": "2026-09-07T02:17:17.630", "references": [{"source": "psirt-info@cyber.jp.nec.com", "url": "https://jpn.nec.com/security-info/secinfo/nv26-005_en.html"}], "sourceIdentifier": "psirt-info@cyber.jp.nec.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-306"}], "source": "psirt-info@cyber.jp.nec.com", "type": "Secondary"}]}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[1.1,1.3]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.4.21,1.4.28]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "1.5.23"}}], "enrichment": {"confidence": 81.0, "confidence_source": "matching", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 81.0, "source": "matching"}]}, "original": {"product": "UNIVERGE IX-R/IX-V", "source": "cna", "vendor": "NEC Corporation"}, "product": "univerge_ix", "vendor": "nec"}], "created": "2026-09-07T03:00:12.403962+00:00", "title": "WebGUI Authentication Bypass Allows Remote CLI Execution on NEC UNIVERGE IX\u2011R/IX\u2011V", "updated": "2026-09-07T07:45:17.010080+00:00", "vendors": ["nec", "nec$PRODUCT$univerge_ix"]}