{"id":"CVE-2026-55145","title":"Outlook Copilot Tampering Vulnerability","summary":"Improper neutralization of special elements used in a command ('command injection') in Outlook Copilot allows an authorized attacker to perform tampering over a network.","severity":"medium","cvss":6.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N/E:P/RL:O/RC:C","cvssSource":"cna","cwe":["CWE-77"],"vendor":"Microsoft","product":"Microsoft Copilot","affected":["copilot -"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-07-14T18:49:46.518586Z"},"published":"2026-07-14","updated":"2026-09-17","sourceUpdated":"2026-09-17T22:33:07.756Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-55145","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55145","label":"Outlook Copilot Tampering Vulnerability"}],"tags":["cve.org"],"epss":0.00525,"epssPercentile":0.43274,"ingestedAt":"2026-09-08T17:06:31.908Z","slug":"CVE-2026-55145","body":"## Overview\n\nImproper neutralization of special elements used in a command ('command injection') in Outlook Copilot allows an authorized attacker to perform tampering over a network.\n\n## Affected\n\n- `copilot -`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":35,"depthScoreParts":{"impact":34.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}