{"id":"CVE-2026-97011","published":"2026-10-13T19:22:10.170","lastModified":"2026-10-15T21:19:27.087","description":"Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.","cvssScore":8.8,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cwes":["CWE-763","CWE-908"],"vendors":["microsoft"],"products":["365 apps","microsoft 365","office 2021","office 2024"],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97011","tags":["Vendor Advisory"]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"Microsoft Excel uses an uninitialized resource that allows remote code execution when processing malicious files, potentially enabling attackers to run arbitrary code on affected systems.","exploitability":"Exploitation requires a user to open a specially crafted Excel file, making it moderately difficult but achievable through social engineering or phishing campaigns.","blast_radius":"If exploited, this vulnerability could allow attackers to execute code on any system running affected versions of Microsoft Office, potentially leading to full system compromise and data exfiltration.","remediation":"Deploy the Microsoft Security Update KB5042379 for Excel 2021 and Excel 2024, or upgrade to Microsoft 365 Apps for Enterprise version 2408 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","excel","office","remote"],"model":"garnet-coder","analyzedAt":"2026-10-18T10:19:34.666Z"}}