{"@odata.context":"https://api.msrc.microsoft.com/sug/v2.0/sugodata/v2.0/en-US/$metadata#vulnerability/$entity","id":"00000000-0000-0000-0000-0000141a2b83","releaseDate":"2026-10-13T07:00:00-07:00","cveNumber":"CVE-2026-70197","cveTitle":".NET Remote Code Execution Vulnerability","releaseNumber":"2026-Oct","vulnType":"Security Vulnerability","latestRevisionDate":"2026-10-19T07:00:00-07:00","description":"<p>Out-of-bounds write in .NET allows an unauthorized attacker to execute code over a network.</p>\n","cweList":["CWE-787: Out-of-bounds Write"],"cweDetailsListForSearch":["cwe: CWE-787: Out-of-bounds Write","cweUrl: https://cwe.mitre.org/data/definitions/787.html"],"unformattedDescription":"<p>Out-of-bounds write in .NET allows an unauthorized attacker to execute code over a network.</p>","mitreText":"CVE-2026-70197","mitreUrl":"https://www.cve.org/CVERecord?id=CVE-2026-70197","publiclyDisclosed":"No","exploited":"No","latestSoftwareReleaseId":2,"latestSoftwareRelease":"Exploitation Less Likely","olderSoftwareReleaseId":0,"denialOfService":"N/A","tag":".NET","issuingCna":"Microsoft","issuingCnaId":100000001,"severityId":100000001,"severity":"Important","impactId":100000005,"impact":"Remote Code Execution","langCode":"en-US","baseScore":"8.1","temporalScore":"7.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/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-787: Out-of-bounds Write","https://cwe.mitre.org/data/definitions/787.html"]}],"articles":[{"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 have a deep understanding of the system and the ability to manipulate its components to trigger a specific condition. Successful exploitation is not guaranteed and depends on a combination of factors that may include the environment, system configuration, and the presence of additional security measures.</p>\n","ordinal":10001},{"title":".NET Remote Code Execution Vulnerability","articleType":"100000000","description":"<p>Out-of-bounds write in .NET allows an unauthorized attacker to execute code over a network.</p>\n","ordinal":10000},{"articleType":"FAQ","description":"<p><strong>How could an attacker exploit this vulnerability?</strong></p>\n<p>An unauthenticated attacker could exploit this vulnerability by sending a specially crafted packet to an affected service over the network. Successful exploitation could allow the attacker to execute code on the target system. No authentication or user interaction is required..</p>\n","ordinal":10000}],"revisions":[{"cveNumber":"CVE-2026-70197","version":1.2,"revisionDate":"2026-10-16T07:00:00-07:00","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":"5e630f46-72c9-f111-aaae-000d3a325eaf"},{"cveNumber":"CVE-2026-70197","version":2,"revisionDate":"2026-10-19T07:00:00-07:00","initialDate":"0001-01-01T00:00:00Z","description":"<p>Microsoft is aware that the vulnerability for which this CVE was assigned has not been addressed.  We are working to prepare and test a complete mitigation.  We will update this document when there is more information.</p>\n","unformattedDescription":"Microsoft is aware that the vulnerability for which this CVE was assigned has not been addressed.  We are working to prepare and test a complete mitigation.  We will update this document when there is more information.","notificationNeeded":false,"notificationSent":false,"sourceId":"c9e81db5-15cc-f111-a059-000d3a369eb0"},{"cveNumber":"CVE-2026-70197","version":1.1,"revisionDate":"2026-10-15T07:00:00-07:00","initialDate":"0001-01-01T00:00:00Z","description":"<p>Updated the Security Updates table to add KB article links for .NET 11.0 and download and KB article links for Microsoft Visual Studio. This is an informational change only; the fixed builds are unchanged.</p>\n","unformattedDescription":"Updated the Security Updates table to add KB article links for .NET 11.0 and download and KB article links for Microsoft Visual Studio. This is an informational change only; the fixed builds are unchanged.","notificationNeeded":false,"notificationSent":false,"sourceId":"f1cbd14e-b7c8-f111-aaad-000d3a3779aa"},{"cveNumber":"CVE-2026-70197","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":"6541bc24-e3b5-f111-93a1-000d3ac5fb71"}]}