{"@odata.context":"https://api.msrc.microsoft.com/sug/v2.0/sugodata/v2.0/en-US/$metadata#vulnerability/$entity","id":"00000000-0000-0000-0000-0000f2df661b","releaseDate":"2026-10-13T07:00:00-07:00","cveNumber":"CVE-2026-105718","cveTitle":"Microsoft Excel Remote Code Execution Vulnerability","releaseNumber":"2026-Oct","vulnType":"Security Vulnerability","latestRevisionDate":"2026-10-15T07:00:00-07:00","description":"<p>Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.</p>\n","cweList":["CWE-125: Out-of-bounds Read","CWE-20: Improper Input Validation"],"cweDetailsListForSearch":["cwe: CWE-125: Out-of-bounds Read","cweUrl: https://cwe.mitre.org/data/definitions/125.html","cwe: CWE-20: Improper Input Validation","cweUrl: https://cwe.mitre.org/data/definitions/20.html"],"unformattedDescription":"<p>Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.</p>","mitreText":"CVE-2026-105718","mitreUrl":"https://www.cve.org/CVERecord?id=CVE-2026-105718","publiclyDisclosed":"No","exploited":"No","latestSoftwareReleaseId":2,"latestSoftwareRelease":"Exploitation Less Likely","olderSoftwareReleaseId":0,"denialOfService":"N/A","tag":"Microsoft Office Excel","issuingCna":"Microsoft","issuingCnaId":100000001,"severityId":100000000,"severity":"Critical","impactId":100000005,"impact":"Remote Code Execution","langCode":"en-US","baseScore":"8.8","temporalScore":"7.7","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","isMariner":false,"customerActionRequired":true,"customerActionRequiredId":1,"cweDetailsList":[{"keys":["cwe","cweUrl"],"values":["CWE-125: Out-of-bounds Read","https://cwe.mitre.org/data/definitions/125.html"]},{"keys":["cwe","cweUrl"],"values":["CWE-20: Improper Input Validation","https://cwe.mitre.org/data/definitions/20.html"]}],"articles":[{"articleType":"FAQ","description":"<p><strong>According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?</strong></p>\n<p>An attacker must send a user a malicious Office file and convince them to open it.</p>\n","ordinal":10000},{"articleType":"FAQ","description":"<p><strong>Is the Preview Pane an attack vector for this vulnerability?</strong></p>\n<p>No, the Preview Pane is not an attack vector.</p>\n","ordinal":10000},{"title":"Microsoft Office Excel Remote Code Execution Vulnerability","articleType":"100000000","description":"<p>Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.</p>\n","ordinal":10000},{"articleType":"FAQ","description":"<p><strong>Are the updates for Microsoft Office LTSC for Mac 2021 and 2024 currently available?</strong></p>\n<p>Yes. As of October 15, 2025, the security update for Microsoft Office LTSC for Mac 2021, 2024 and Microsoft Office 365 for Mac are available. Customers running Microsoft Office LTSC for Mac 2021, 2024 and Microsoft Office 365 for Mac should ensure the update is installed to be protected from this vulnerability.</p>\n","ordinal":10000}],"revisions":[{"cveNumber":"CVE-2026-105718","version":1,"revisionDate":"2026-10-13T07:00:00-07:00","initialDate":"0001-01-01T00:00:00Z","description":"<p>Information published.</p>\n","unformattedDescription":"Information published.","notificationNeeded":false,"notificationSent":false,"sourceId":"ab30bb38-fdc0-f111-aaae-000d3a5aa3a1"},{"cveNumber":"CVE-2026-105718","version":1.1,"revisionDate":"2026-10-15T07:00:00-07:00","initialDate":"0001-01-01T00:00:00Z","description":"<p>Microsoft is announcing the availability of the security updates for Microsoft Office for Mac. Customers running affected Mac software should install the update for their product to be protected from this vulnerability. Customers running other Microsoft Office software do not need to take any action. See the <a href=\"https://go.microsoft.com/fwlink/p/?linkid=831049\">Release Notes</a> for more information and download links.</p>\n","unformattedDescription":"Microsoft is announcing the availability of the security updates for Microsoft Office for Mac. Customers running affected Mac software should install the update for their product to be protected from this vulnerability. Customers running other Microsoft Office software do not need to take any action. See the [Release Notes](https://go.microsoft.com/fwlink/p/?linkid=831049) for more information and download links.","notificationNeeded":false,"notificationSent":false,"sourceId":"adeea698-c8c8-f111-aaae-000d3a5aa3a1"}]}