{"id":"CVE-2026-118728","aliases":["EUVD-2026-122598","GHSA-mv99-v3jg-48j6"],"status":"published","title":"Microsoft Office Excel Information Disclosure Vulnerability","description":"Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/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":"2026-11-11","score":0.0102,"percentile":0.63832,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2026-11-10T18:25:03Z","modified":"2026-11-10T21:33:17Z","products":[{"vendor":"microsoft","product":"microsoft 365 apps for enterprise"},{"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":"office online server"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-118728","tags":["vendor-advisory","patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-118728"},{"url":"https://github.com/advisories/GHSA-mv99-v3jg-48j6"}],"sources":{"cve":[{"id":"CVE-2026-118728","title":"Microsoft Office Excel Information Disclosure Vulnerability","description":"Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-11-10T18:25:03.932Z","modified":"2026-11-11T17:20:41.092Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/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":"2026-11-10T19:39:58.44836Z"}],"euvd":[{"id":"EUVD-2026-122598","description":"Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-11-10T18:25:03Z","modified":"2026-11-11T17:20:41Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-10T23:24:34.140893Z"}],"ghsa":[{"id":"GHSA-mv99-v3jg-48j6","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 over a network.","status":"published","published":"2026-11-10T21:33:08Z","modified":"2026-11-10T21:33:17Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-10T21:57:52.876435Z"}],"nvd":[{"id":"CVE-2026-118728","description":"Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-11-10T19:19:49.203Z","modified":"2026-11-10T20:18:24.003Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-10T22:21:32.984056Z"}]}}