CVE-2026-21784

{"id": "CVE-2026-21784", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-21784", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-27T15:42:28.731699Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "psirt@hcl.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 4.8, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "HIGH", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 1.7}]}, "affected": [{"source": "psirt@hcl.com", "affectedData": [{"vendor": "HCL Software", "product": "IEM", "versions": [{"status": "affected", "version": "v1.4.0"}], "defaultStatus": "unaffected"}]}], "published": "2026-08-20T13:17:05.103", "references": [{"url": "https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0132456", "source": "psirt@hcl.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "psirt@hcl.com", "description": [{"lang": "en", "value": "CWE-200"}]}], "descriptions": [{"lang": "en", "value": "HCL IntelliOps Event Management (IEM) is affected by missing or insecure Cross-Origin Security headers. This issue makes the application's environment and resources susceptible to unauthorized external interaction and potential exploitation."}], "lastModified": "2026-08-28T16:08:09.497", "sourceIdentifier": "psirt@hcl.com"}