{"@odata.context":"https://api.msrc.microsoft.com/sug/v2.0/sugodata/v2.0/en-US/$metadata#vulnerability/$entity","id":"00000000-0000-0000-0000-00004239b2c9","releaseDate":"2026-08-11T07:00:00-07:00","cveNumber":"CVE-2026-68820","cveTitle":"Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability","releaseNumber":"2026-Aug","vulnType":"Security Vulnerability","latestRevisionDate":"2026-08-11T07:00:00-07:00","description":"<p>Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.</p>\n","cweList":["CWE-416: Use After Free"],"cweDetailsListForSearch":["cwe: CWE-416: Use After Free","cweUrl: https://cwe.mitre.org/data/definitions/416.html"],"unformattedDescription":"Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.","mitreText":"CVE-2026-68820","mitreUrl":"https://www.cve.org/CVERecord?id=CVE-2026-68820","publiclyDisclosed":"No","exploited":"Yes","latestSoftwareReleaseId":0,"latestSoftwareRelease":"Exploitation Detected","olderSoftwareReleaseId":0,"denialOfService":"N/A","tag":"Windows Ancillary Function Driver for WinSock","issuingCna":"Microsoft","issuingCnaId":100000001,"severityId":100000001,"severity":"Important","impactId":100000002,"impact":"Elevation of Privilege","langCode":"en-US","baseScore":"7.0","temporalScore":"6.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/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-416: Use After Free","https://cwe.mitre.org/data/definitions/416.html"]}],"articles":[{"title":"Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability","articleType":"100000000","description":"<p>Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.</p>\n","ordinal":10000},{"articleType":"FAQ","description":"<p><strong>What privileges could be gained by an attacker who successfully exploited this vulnerability?</strong></p>\n<p>An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.</p>\n","ordinal":10000},{"articleType":"FAQ","description":"<p><strong>According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?</strong></p>\n<p>Successful exploitation of this vulnerability requires an attacker to win a race condition.</p>\n","ordinal":10000},{"articleType":"FAQ","description":"<p><strong>How could an attacker exploit this vulnerability?</strong></p>\n<p>A locally authenticated attacker could run a specially crafted application on an affected system to trigger a race condition. Successful exploitation could allow the attacker to gain SYSTEM privileges. User interaction is not required.</p>\n","ordinal":10000}],"revisions":[{"cveNumber":"CVE-2026-68820","version":1,"revisionDate":"2026-08-11T07:00:00-07:00","initialDate":"0001-01-01T00:00:00Z","description":"<p>Information published.</p>\n","unformattedDescription":"Information published.","notificationNeeded":false,"notificationSent":false,"sourceId":"a0add37b-4f8f-f111-93a1-000d3ac5fb71"}]}