{"id":"CVE-2026-42893","aliases":["EUVD-2026-29716","GHSA-h35m-vhjw-vqxj"],"status":"published","title":"Microsoft Outlook for iOS Tampering Vulnerability","description":"Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to perform tampering over a network.","severity":{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00399,"percentile":0.3444,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-77"],"published":"2026-05-12T16:59:37Z","modified":"2026-10-26T18:10:00Z","products":[{"vendor":"microsoft","product":"microsoft outlook for ios"},{"vendor":"microsoft","product":"outlook"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42893","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42893"},{"url":"https://github.com/advisories/GHSA-h35m-vhjw-vqxj"}],"sources":{"cve":[{"id":"CVE-2026-42893","title":"Microsoft Outlook for iOS Tampering Vulnerability","description":"Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to perform tampering over a network.","status":"published","published":"2026-05-12T16:59:37.33Z","modified":"2026-08-10T15:13:44.91Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-77"],"updated_at":"2026-11-02T13:40:23.731501Z"}],"euvd":[{"id":"EUVD-2026-29716","description":"Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to perform tampering over a network.","status":"published","published":"2026-05-12T16:59:37Z","modified":"2026-08-10T15:13:44Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T18:02:01.941928Z"}],"ghsa":[{"id":"GHSA-h35m-vhjw-vqxj","title":"Improper neutralization of special elements used in a command ('command injection') in M365...","description":"Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to perform tampering over a network.","status":"published","published":"2026-05-12T18:30:47Z","modified":"2026-05-12T18:30:54Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-77"],"updated_at":"2026-11-02T15:08:05.647564Z"}],"nvd":[{"id":"CVE-2026-42893","description":"Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to perform tampering over a network.","status":"published","published":"2026-05-12T18:17:26.343Z","modified":"2026-10-26T18:10:00.173Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-77"],"updated_at":"2026-11-02T14:12:18.613259Z"}]}}