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Specific version numbers are not listed in the advisory, so any assembly of the named products that lacks the official patch should be viewed as potentially vulnerable.", "description_and_impact": "The flaw is an out\u2011of\u2011bounds read in Microsoft Office Excel that allows an attacker with local access to read memory belonging to another object, potentially exposing sensitive data on the victim\u2019s system and compromising confidentiality. This weakness is a classic out\u2011of\u2011bounds read identified as CWE\u2011125.", "risk_and_exploitability": "The CVSS base score of 7.1 indicates a high impact on confidentiality, while the exploitation complexity is moderate. No EPSS score is available and the vulnerability is not listed in the CISA KEV catalog, suggesting that public exploits may not yet exist. The likely attack vector is local, requiring the attacker to supply malicious input or a workbook that triggers the out\u2011of\u2011bounds read; this inference is based on the nature of the defect."}}}}, "created": "2026-04-15T14:31:56.922803+00:00", "updated": "2026-04-15T15:00:06.180021+00:00", "vendors": ["microsoft", "microsoft$PRODUCT$365_apps", "microsoft$PRODUCT$excel_2016", "microsoft$PRODUCT$office_2019", "microsoft$PRODUCT$office_2021", "microsoft$PRODUCT$office_2024", "microsoft$PRODUCT$office_macos_2021", "microsoft$PRODUCT$office_macos_2024", "microsoft$PRODUCT$office_online_server"]}