CVE-2026-84165

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-84165", "assignerOrgId": "0cbda920-cd7f-484a-8e76-bf7f4b7f4516", "state": "PUBLISHED", "assignerShortName": "INCIBE", "dateReserved": "2026-09-01T08:05:51.571Z", "datePublished": "2026-09-01T10:49:22.381Z", "dateUpdated": "2026-09-01T12:17:49.009Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "0cbda920-cd7f-484a-8e76-bf7f4b7f4516", "shortName": "INCIBE", "dateUpdated": "2026-09-01T10:49:22.381Z"}, "title": "Lack of authorisation in OpenNebula by OpenNebula Systems", "datePublic": "2026-09-01T10:46:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-284", "description": "CWE-284 Improper Access Control", "type": "CWE"}]}], "affected": [{"vendor": "OpenNebula Systems", "product": "OpenNebula", "versions": [{"status": "affected", "version": "0", "lessThan": "7.4", "versionType": "custom"}], "defaultStatus": "unaffected"}], "cpeApplicability": [{"operator": "OR", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:opennebula_systems:opennebula:*:*:*:*:*:*:*:*", "versionStartIncluding": "0", "versionEndExcluding": "7.4"}]}]}], "descriptions": [{"lang": "en", "value": "A vulnerability relating to incorrect access control in OpenNebula by OpenNebula Systems, affecting all versions prior to 7.4. This vulnerability could allow an authenticated user with basic permissions to execute commands on virtual machines belonging to other users via the `one.vm.exec` function, without proper verification of access permissions. To exploit the vulnerability, it is only necessary to know the virtual machine\u2019s identifier and for qemu-agent to be enabled on that machine. Exploitation could allow commands to be executed and compromise the confidentiality, integrity and availability of the affected virtual machines.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "A vulnerability relating to incorrect access control in OpenNebula by OpenNebula Systems, affecting all versions prior to 7.4. This vulnerability could allow an authenticated user with basic permissions to execute commands on virtual machines belonging to other users via the `one.vm.exec` function, without proper verification of access permissions. To exploit the vulnerability, it is only necessary to know the virtual machine\u2019s identifier and for qemu-agent to be enabled on that machine. Exploitation could allow commands to be executed and compromise the confidentiality, integrity and availability of the affected virtual machines."}]}], "references": [{"url": "https://www.incibe.es/en/incibe-cert/notices/aviso/lack-authorisation-opennebula-opennebula-systems", "tags": ["patch"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 8.7, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}}], "solutions": [{"lang": "en", "value": "Update to OpenNebula version 7.4.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Update to OpenNebula version 7.4."}]}], "credits": [{"lang": "en", "value": "Yonghwa Lee, Xint from Theori.", "type": "finder"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-01T12:17:37.497929Z", "id": "CVE-2026-84165", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-01T12:17:49.009Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-84165", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-09-01T12:17:37.497929Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-01T12:17:44.003Z"}}], "cna": {"title": "Lack of authorisation in OpenNebula by OpenNebula Systems", "source": {"discovery": "EXTERNAL"}, "credits": [{"lang": "en", "type": "finder", "value": "Yonghwa Lee, Xint from Theori."}], "metrics": [{"format": "CVSS", "cvssV4_0": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.7, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "OpenNebula Systems", "product": "OpenNebula", "versions": [{"status": "affected", "version": "0", "lessThan": "7.4", "versionType": "custom"}], "defaultStatus": "unaffected"}], "solutions": [{"lang": "en", "value": "Update to OpenNebula version 7.4.", "supportingMedia": [{"type": "text/html", "value": "Update to OpenNebula version 7.4.", "base64": false}]}], "datePublic": "2026-09-01T10:46:00.000Z", "references": [{"url": "https://www.incibe.es/en/incibe-cert/notices/aviso/lack-authorisation-opennebula-opennebula-systems", "tags": ["patch"]}], "x_generator": {"engine": "Vulnogram 1.0.5"}, "descriptions": [{"lang": "en", "value": "A vulnerability relating to incorrect access control in OpenNebula by OpenNebula Systems, affecting all versions prior to 7.4. This vulnerability could allow an authenticated user with basic permissions to execute commands on virtual machines belonging to other users via the `one.vm.exec` function, without proper verification of access permissions. To exploit the vulnerability, it is only necessary to know the virtual machine\u2019s identifier and for qemu-agent to be enabled on that machine. Exploitation could allow commands to be executed and compromise the confidentiality, integrity and availability of the affected virtual machines.", "supportingMedia": [{"type": "text/html", "value": "A vulnerability relating to incorrect access control in OpenNebula by OpenNebula Systems, affecting all versions prior to 7.4. This vulnerability could allow an authenticated user with basic permissions to execute commands on virtual machines belonging to other users via the `one.vm.exec` function, without proper verification of access permissions. To exploit the vulnerability, it is only necessary to know the virtual machine\u2019s identifier and for qemu-agent to be enabled on that machine. Exploitation could allow commands to be executed and compromise the confidentiality, integrity and availability of the affected virtual machines.", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-284", "description": "CWE-284 Improper Access Control"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:opennebula_systems:opennebula:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.4", "versionStartIncluding": "0"}], "operator": "OR"}], "operator": "OR"}], "providerMetadata": {"orgId": "0cbda920-cd7f-484a-8e76-bf7f4b7f4516", "shortName": "INCIBE", "dateUpdated": "2026-09-01T10:49:22.381Z"}}}, "cveMetadata": {"cveId": "CVE-2026-84165", "state": "PUBLISHED", "dateUpdated": "2026-09-01T12:17:49.009Z", "dateReserved": "2026-09-01T08:05:51.571Z", "assignerOrgId": "0cbda920-cd7f-484a-8e76-bf7f4b7f4516", "datePublished": "2026-09-01T10:49:22.381Z", "assignerShortName": "INCIBE"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "OpenNebula", "vendor": "OpenNebula Systems", "versions": [{"lessThan": "7.4", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "cve-coordination@incibe.es"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability relating to incorrect access control in OpenNebula by OpenNebula Systems, affecting all versions prior to 7.4. This vulnerability could allow an authenticated user with basic permissions to execute commands on virtual machines belonging to other users via the `one.vm.exec` function, without proper verification of access permissions. To exploit the vulnerability, it is only necessary to know the virtual machine\u2019s identifier and for qemu-agent to be enabled on that machine. Exploitation could allow commands to be executed and compromise the confidentiality, integrity and availability of the affected virtual machines."}], "id": "CVE-2026-84165", "lastModified": "2026-09-01T20:50:58.753", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.7, "baseSeverity": "HIGH", "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": "LOW", "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:L/UI:N/VC:H/VI:H/VA:H/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": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cve-coordination@incibe.es", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-84165", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-09-01T12:17:37.497929Z", "version": "2.0.3"}}]}, "published": "2026-09-01T11:16:45.713", "references": [{"source": "cve-coordination@incibe.es", "url": "https://www.incibe.es/en/incibe-cert/notices/aviso/lack-authorisation-opennebula-opennebula-systems"}], "sourceIdentifier": "cve-coordination@incibe.es", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-284"}], "source": "cve-coordination@incibe.es", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,7.4)"}}], "enrichment": {"confidence": 84.0, "confidence_source": "matching", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 84.0, "source": "matching"}]}, "original": {"product": "OpenNebula", "source": "cna", "vendor": "OpenNebula Systems"}, "product": "opennebula", "vendor": "opennebula"}], "created": "2026-09-01T12:30:04.604964+00:00", "updated": "2026-09-02T22:10:30.052328+00:00", "vendors": ["opennebula", "opennebula$PRODUCT$opennebula"]}