{"id":"CVE-2026-50408","aliases":["EUVD-2026-44161","GHSA-99rr-9h5v-ch7f"],"status":"published","title":"Microsoft Excel Information Disclosure Vulnerability","description":"Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00541,"percentile":0.45829,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2026-07-14T17:08:32Z","modified":"2026-11-01T17:36:06Z","products":[{"vendor":"microsoft","product":"365_apps"},{"vendor":"microsoft","product":"excel"},{"vendor":"microsoft","product":"microsoft 365 apps for enterprise"},{"vendor":"microsoft","product":"microsoft excel 2016"},{"vendor":"microsoft","product":"microsoft office 2019"},{"vendor":"microsoft","product":"microsoft office 365 for mac"},{"vendor":"microsoft","product":"microsoft office ltsc 2021"},{"vendor":"microsoft","product":"microsoft office ltsc 2024"},{"vendor":"microsoft","product":"microsoft office ltsc for mac 2021"},{"vendor":"microsoft","product":"microsoft office ltsc for mac 2024"},{"vendor":"microsoft","product":"microsoft_365"},{"vendor":"microsoft","product":"office online server"},{"vendor":"microsoft","product":"office_2019"},{"vendor":"microsoft","product":"office_2021"},{"vendor":"microsoft","product":"office_2024"},{"vendor":"microsoft","product":"office_online_server"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50408","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50408"},{"url":"https://github.com/advisories/GHSA-99rr-9h5v-ch7f"}],"sources":{"cve":[{"id":"CVE-2026-50408","title":"Microsoft Excel Information Disclosure Vulnerability","description":"Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.","status":"published","published":"2026-07-14T17:08:32.834Z","modified":"2026-11-01T17:36:06.657Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:20:08.734143Z"}],"euvd":[{"id":"EUVD-2026-44161","description":"Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.","status":"published","published":"2026-07-14T17:08:32Z","modified":"2026-11-01T17:36:06Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-02T16:58:47.432726Z"}],"ghsa":[{"id":"GHSA-99rr-9h5v-ch7f","title":"Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose...","description":"Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.","status":"published","published":"2026-07-14T18:32:21Z","modified":"2026-07-14T18:32:27Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:09:29.53235Z"}],"nvd":[{"id":"CVE-2026-50408","description":"Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.","status":"published","published":"2026-07-14T18:17:43.49Z","modified":"2026-07-16T15:16:32.187Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:12:29.489525Z"}]}}