{"@odata.context":"https://api.msrc.microsoft.com/sug/v2.0/sugodata/v2.0/en-US/$metadata#vulnerability/$entity","id":"00000000-0000-0000-0000-0000ebc40a27","releaseDate":"2026-11-10T08:00:00-08:00","cveNumber":"CVE-2026-66801","cveTitle":"Microsoft Xbox Remote Code Execution Vulnerability","releaseNumber":"2026-Nov","vulnType":"Security Vulnerability","latestRevisionDate":"2026-11-10T08:00:00-08:00","description":"<p>Heap-based buffer overflow in Xbox allows an unauthorized attacker to execute code over a network.</p>\n","cweList":["CWE-122: Heap-based Buffer Overflow"],"cweDetailsListForSearch":["cwe: CWE-122: Heap-based Buffer Overflow","cweUrl: https://cwe.mitre.org/data/definitions/122.html"],"unformattedDescription":"<p>Heap-based buffer overflow in Xbox allows an unauthorized attacker to execute code over a network.</p>","mitreText":"CVE-2026-66801","mitreUrl":"https://www.cve.org/CVERecord?id=CVE-2026-66801","publiclyDisclosed":"No","exploited":"No","latestSoftwareReleaseId":2,"latestSoftwareRelease":"Exploitation Less Likely","olderSoftwareReleaseId":0,"denialOfService":"N/A","tag":"Xbox","issuingCna":"Microsoft","issuingCnaId":100000001,"severityId":100000001,"severity":"Important","impactId":100000005,"impact":"Remote Code Execution","langCode":"en-US","baseScore":"9.8","temporalScore":"8.5","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","vectorStringSource":"Microsoft","isMariner":false,"customerActionRequired":true,"customerActionRequiredId":1,"cweDetailsList":[{"keys":["cwe","cweUrl"],"values":["CWE-122: Heap-based Buffer Overflow","https://cwe.mitre.org/data/definitions/122.html"]}],"articles":[{"title":"Xbox Remote Code Execution Vulnerability","articleType":"100000000","description":"<p>Heap-based buffer overflow in Xbox allows an unauthorized attacker to execute code over a network.</p>\n","ordinal":10000},{"articleType":"FAQ","description":"<p><strong>How could an attacker exploit this vulnerability?</strong></p>\n<p>An unauthenticated attacker could exploit this vulnerability by sending a specially crafted packet to an affected service over the network. Successful exploitation could allow the attacker to execute code on the target system. No authentication or user interaction is required.</p>\n","ordinal":10000},{"title":"Xbox Remote Code Execution Vulnerability","articleType":"100000000","description":"<p>Heap-based buffer overflow in Xbox allows an unauthorized attacker to execute code over a network.</p>\n","ordinal":10000}],"revisions":[{"cveNumber":"CVE-2026-66801","version":1,"revisionDate":"2026-11-10T08:00:00-08:00","initialDate":"0001-01-01T00:00:00Z","description":"<p>Information published.</p>\n","unformattedDescription":"Information published.","notificationNeeded":false,"notificationSent":false,"sourceId":"6868211b-a38b-f111-93a1-000d3ac5fb71"}]}