{"@odata.context":"https://api.msrc.microsoft.com/sug/v2.0/sugodata/v2.0/en-US/$metadata#vulnerability/$entity","id":"00000000-0000-0000-0000-00004513a6b7","releaseDate":"2026-08-11T07:00:00-07:00","cveNumber":"CVE-2026-70329","cveTitle":"Microsoft Outlook Remote Code Execution Vulnerability","releaseNumber":"2026-Aug","vulnType":"Security Vulnerability","latestRevisionDate":"2026-08-27T07:00:00-07:00","description":"<p>Integer overflow or wraparound in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.</p>\n","cweList":["CWE-190: Integer Overflow or Wraparound"],"cweDetailsListForSearch":["cwe: CWE-190: Integer Overflow or Wraparound","cweUrl: https://cwe.mitre.org/data/definitions/190.html"],"unformattedDescription":"Integer overflow or wraparound in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.","mitreText":"CVE-2026-70329","mitreUrl":"https://www.cve.org/CVERecord?id=CVE-2026-70329","publiclyDisclosed":"No","exploited":"No","latestSoftwareReleaseId":3,"latestSoftwareRelease":"Exploitation Unlikely","olderSoftwareReleaseId":0,"denialOfService":"N/A","tag":"Microsoft Office Outlook","issuingCna":"Microsoft","issuingCnaId":100000001,"severityId":100000001,"severity":"Important","impactId":100000005,"impact":"Remote Code Execution","langCode":"en-US","baseScore":"8.8","temporalScore":"7.7","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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-190: Integer Overflow or Wraparound","https://cwe.mitre.org/data/definitions/190.html"]}],"articles":[{"title":"Microsoft Office Outlook Remote Code Execution Vulnerability","articleType":"100000000","description":"<p>Integer overflow or wraparound in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.</p>\n","ordinal":10000},{"articleType":"FAQ","description":"<p><strong>According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?</strong></p>\n<p>An attacker must send a user a malicious Office file and convince them to open it.</p>\n","ordinal":10000},{"articleType":"FAQ","description":"<p><strong>According to the CVSS metric, the attack vector is local (AV:L). Why does the CVE title indicate that this is a remote code execution?</strong></p>\n<p>The word <strong>Remote</strong> in the title refers to the location of the attacker. This type of exploit is sometimes referred to as Arbitrary Code Execution (ACE). The attack itself is carried out locally. This means an attacker or victim needs to execute code from the local machine to exploit the vulnerability.</p>\n","ordinal":10000}],"revisions":[{"cveNumber":"CVE-2026-70329","version":1,"revisionDate":"2026-08-11T07:00:00-07:00","initialDate":"0001-01-01T00:00:00Z","description":"<p>Information published.</p>\n","unformattedDescription":"Information published.","notificationNeeded":false,"notificationSent":false,"sourceId":"43e6e442-5690-f111-93a1-000d3ac5fb71"},{"cveNumber":"CVE-2026-70329","version":1.1,"revisionDate":"2026-08-27T07:00:00-07:00","initialDate":"0001-01-01T00:00:00Z","description":"<p>Acknowledgement Updated</p>\n","unformattedDescription":"Acknowledgement Updated","notificationNeeded":false,"notificationSent":false,"sourceId":"08ddd25b-45a2-f111-93fe-000d3afbc7d7"}]}