{"@odata.context":"https://api.msrc.microsoft.com/sug/v2.0/sugodata/v2.0/en-US/$metadata#vulnerability/$entity","id":"00000000-0000-0000-0000-00006b460fde","releaseDate":"2026-07-14T07:00:00-07:00","cveNumber":"CVE-2026-50343","cveTitle":"Microsoft Install Service Elevation of Privilege Vulnerability","releaseNumber":"2026-Jul","vulnType":"Security Vulnerability","latestRevisionDate":"2026-07-27T07:00:00-07:00","description":"<p>Improper privilege management in Microsoft Install Service allows an authorized attacker to elevate privileges locally.</p>\n","cweList":["CWE-269: Improper Privilege Management"],"cweDetailsListForSearch":["cwe: CWE-269: Improper Privilege Management","cweUrl: https://cwe.mitre.org/data/definitions/269.html"],"unformattedDescription":"Improper privilege management in Microsoft Install Service allows an authorized attacker to elevate privileges locally.","mitreText":"CVE-2026-50343","mitreUrl":"https://www.cve.org/CVERecord?id=CVE-2026-50343","publiclyDisclosed":"No","exploited":"No","latestSoftwareReleaseId":1,"latestSoftwareRelease":"Exploitation More Likely","olderSoftwareReleaseId":0,"denialOfService":"N/A","tag":"Microsoft Install Service","issuingCna":"Microsoft","issuingCnaId":100000001,"severityId":100000001,"severity":"Important","impactId":100000002,"impact":"Elevation of Privilege","langCode":"en-US","baseScore":"7.8","temporalScore":"6.8","vectorString":"CVSS:3.1/AV:L/AC:L/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-269: Improper Privilege Management","https://cwe.mitre.org/data/definitions/269.html"]}],"articles":[{"title":"Microsoft Install Service Elevation of Privilege Vulnerability","articleType":"100000000","description":"<p>Improper privilege management in Microsoft Install Service 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}],"revisions":[{"cveNumber":"CVE-2026-50343","version":1,"revisionDate":"2026-07-14T07:00:00-07:00","initialDate":"0001-01-01T00:00:00Z","description":"<p>Information published.</p>\n","unformattedDescription":"Information published.","notificationNeeded":false,"notificationSent":false,"sourceId":"be25e15e-4560-f111-93fb-000d3afbc7d7"},{"cveNumber":"CVE-2026-50343","version":1.1,"revisionDate":"2026-07-27T07:00:00-07:00","initialDate":"0001-01-01T00:00:00Z","description":"<p>Updated an acknowledgement. This is an informational change only.</p>\n","unformattedDescription":"Updated an acknowledgement. This is an informational change only.","notificationNeeded":false,"notificationSent":false,"sourceId":"83813d4a-048a-f111-93fe-000d3afbc7d7"}]}