CVE-2026-78604

{"id": "CVE-2026-78604", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-78604", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-09-02T00:00:00+00:00"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@elastic.co", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "affected": [{"source": "security@elastic.co", "affectedData": [{"vendor": "Elastic", "product": "Elastic Agent", "versions": [{"status": "affected", "version": "8.0.0", "versionType": "semver", "lessThanOrEqual": "8.19.20"}, {"status": "affected", "version": "9.0.0", "versionType": "semver", "lessThanOrEqual": "9.4.5"}, {"status": "affected", "version": "9.5.0", "versionType": "semver", "lessThanOrEqual": "9.5.1"}], "defaultStatus": "unaffected"}]}], "published": "2026-09-02T15:17:41.670", "references": [{"url": "https://discuss.elastic.co/t/elastic-agent-8-19-21-9-4-6-9-5-2-security-update-esa-2026-150/390109", "tags": ["Vendor Advisory"], "source": "security@elastic.co"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security@elastic.co", "description": [{"lang": "en", "value": "CWE-732"}]}], "descriptions": [{"lang": "en", "value": "Incorrect Permission Assignment for Critical Resource (CWE-732) in Elastic Agent can lead to local privilege escalation via Replace Binaries (CAPEC-642). On Windows systems where Elastic Agent is installed in unprivileged mode, resources used by the agent service are created with access controls broader than required. A local user could take advantage of this to cause the service to execute code of their choosing, ultimately obtaining SYSTEM-level privileges on the host."}], "lastModified": "2026-09-04T16:44:26.187", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:elastic:elastic_agent:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A6CF6C33-1C71-4D47-B805-E5C31E2AC62F", "versionEndExcluding": "8.19.21", "versionStartIncluding": "8.0.0"}, {"criteria": "cpe:2.3:a:elastic:elastic_agent:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5C272701-97C6-4B7A-932A-978F1FE3FF55", "versionEndExcluding": "9.4.6", "versionStartIncluding": "9.0.0"}, {"criteria": "cpe:2.3:a:elastic:elastic_agent:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CEE2F5DC-02DA-4B5F-80F8-9DDAC798FD9E", "versionEndExcluding": "9.5.2", "versionStartIncluding": "9.5.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@elastic.co"}