{"@odata.context":"https://api.msrc.microsoft.com/sug/v2.0/sugodata/v2.0/en-US/$metadata#vulnerability/$entity","id":"00000000-0000-0000-0000-00005da3c998","releaseDate":"2026-10-13T07:00:00-07:00","cveNumber":"CVE-2026-108398","cveTitle":".NET Framework Security Feature Bypass Vulnerability","releaseNumber":"2026-Oct","vulnType":"Security Vulnerability","latestRevisionDate":"2026-10-13T07:00:00-07:00","description":"<p>Untrusted search path in .NET Framework allows an authorized attacker to bypass a security feature locally.</p>\n","cweList":["CWE-426: Untrusted Search Path"],"cweDetailsListForSearch":["cwe: CWE-426: Untrusted Search Path","cweUrl: https://cwe.mitre.org/data/definitions/426.html"],"unformattedDescription":"<p>Untrusted search path in .NET Framework allows an authorized attacker to bypass a security feature locally.</p>","mitreText":"CVE-2026-108398","mitreUrl":"https://www.cve.org/CVERecord?id=CVE-2026-108398","publiclyDisclosed":"Yes","exploited":"No","latestSoftwareReleaseId":2,"latestSoftwareRelease":"Exploitation Less Likely","olderSoftwareReleaseId":0,"denialOfService":"N/A","tag":".NET Framework","issuingCna":"Microsoft","issuingCnaId":100000001,"severityId":100000001,"severity":"Important","impactId":100000007,"impact":"Security Feature Bypass","langCode":"en-US","baseScore":"8.8","temporalScore":"7.7","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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-426: Untrusted Search Path","https://cwe.mitre.org/data/definitions/426.html"]}],"articles":[{"title":".NET Framework Security Feature Bypass Vulnerability","articleType":"100000000","description":"<p>Untrusted search path in .NET Framework allows an authorized attacker to bypass a security feature locally.</p>\n","ordinal":10000},{"articleType":"FAQ","description":"<p><strong>What kind of security feature could be bypassed by successfully exploiting this vulnerability?</strong></p>\n<p>An attacker who successfully exploits this vulnerability could bypass Windows Defender Application Control (WDAC) enforcement. This could lead to the ability to run unauthorized applications on target systems.</p>\n","ordinal":10000},{"articleType":"FAQ","description":"<p><strong>How could an attacker exploit this vulnerability?</strong></p>\n<p>An authenticated attacker could place a specially crafted .NET assembly on an affected system and register it for loading by a protected process. Successful exploitation could bypass Windows Defender Application Control restrictions and allow the attacker to execute code within the protected process. User interaction is not required.</p>\n","ordinal":10000}],"revisions":[{"cveNumber":"CVE-2026-108398","version":1,"revisionDate":"2026-10-13T07:00:00-07:00","initialDate":"0001-01-01T00:00:00Z","description":"<p>Information published.</p>\n","unformattedDescription":"Information published.","notificationNeeded":false,"notificationSent":false,"sourceId":"3307da27-a0c5-f111-aaad-000d3a3779aa"}]}