{"id":"CVE-2026-40372","revision":"99ed499843e445be9d566e52b9812c2c","records":[{"revision":"99ed499843e445be9d566e52b9812c2c","observedAt":"2026-10-25T09:17:30.114+00:00","statement":{"source":"nvd","id":"CVE-2026-40372","aliases":[],"title":"Improper verification of cryptographic signature in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network.","description":"Improper verification of cryptographic signature in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network.","state":0,"publishedAt":"2026-04-21T20:16:59.133+00:00","modifiedAt":"2026-07-15T02:21:05.553+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · secure@microsoft.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1,"severity":"CRITICAL"},{"system":"CVSS 3.1 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1,"severity":"CRITICAL"}],"references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40372","https://access.redhat.com/security/cve/CVE-2026-40372","https://bugzilla.redhat.com/show_bug.cgi?id=2460224","https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40372.json"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-40372","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Modified","weaknesses":["CWE-347"],"productCriteria":["cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*"],"sourceDates":{"published":"2026-04-21T20:16:59.133","lastModified":"2026-07-15T02:21:05.553"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-40372","identifiers":["CVE-2026-40372"]},"retained":false,"historicalAffected":[]}],"coverage":[]}