{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-45490: .NET SDK Elevation of Privilege Vulnerability","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-45490","status":"final","version":"1","initial_release_date":"2026-06-09T17:04:43.900Z","current_release_date":"2026-06-10T17:53:33.889Z","revision_history":[{"date":"2026-06-09T17:04:43.900Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"Improper authorization in .NET allows an authorized attacker to elevate privileges locally.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-45490 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-45490"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-45490"},{"category":"external","summary":".NET SDK Elevation of Privilege Vulnerability","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45490"}]},"product_tree":{"branches":[{"category":"vendor","name":"Microsoft","branches":[{"category":"product_name","name":".NET 10.0","branches":[{"category":"product_version_range","name":">=10.0.0 <10.0.9","product":{"name":"Microsoft .NET 10.0 >=10.0.0 <10.0.9","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:microsoft:.net_10.0:*:*:*:*:*:*:*:*"}}}]}]},{"category":"vendor","name":"Microsoft","branches":[{"category":"product_name","name":".NET 8.0","branches":[{"category":"product_version_range","name":">=8.0.0 <8.0.28","product":{"name":"Microsoft .NET 8.0 >=8.0.0 <8.0.28","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:microsoft:.net_8.0:*:*:*:*:*:*:*:*"}}}]}]},{"category":"vendor","name":"Microsoft","branches":[{"category":"product_name","name":".NET 9.0","branches":[{"category":"product_version_range","name":">=9.0.0 <9.0.17","product":{"name":"Microsoft .NET 9.0 >=9.0.0 <9.0.17","product_id":"CSAFPID-3","product_identification_helper":{"cpe":"cpe:2.3:a:microsoft:.net_9.0:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-45490","title":".NET SDK Elevation of Privilege Vulnerability","notes":[{"category":"description","text":"Improper authorization in .NET allows an authorized attacker to elevate privileges locally.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1","CSAFPID-2","CSAFPID-3"]},"scores":[{"cvss_v3":{"version":"3.1","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","baseScore":7.8,"baseSeverity":"HIGH"},"products":["CSAFPID-1","CSAFPID-2","CSAFPID-3"]}],"remediations":[{"category":"vendor_fix","details":"Update to a fixed version: 8.0.28, 9.0.17, 10.0.9.","product_ids":["CSAFPID-1","CSAFPID-2","CSAFPID-3"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45490"}]}]}