{"id":"CVE-2026-54988","aliases":["EUVD-2026-44039","GHSA-cpg5-9rxq-hxph"],"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":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00461,"percentile":0.40282,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2026-07-14T17:05:09Z","modified":"2026-11-01T17:32:46Z","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-2026-54988","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54988"},{"url":"https://github.com/advisories/GHSA-cpg5-9rxq-hxph"}],"sources":{"cve":[{"id":"CVE-2026-54988","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":"2026-07-14T17:05:09.425Z","modified":"2026-11-01T17:32:46.845Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T13:37:58.613221Z"}],"euvd":[{"id":"EUVD-2026-44039","description":"Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.","status":"published","published":"2026-07-14T17:05:09Z","modified":"2026-11-01T17:32:46Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-02T16:58:49.161713Z"}],"ghsa":[{"id":"GHSA-cpg5-9rxq-hxph","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":"2026-07-14T18:32:08Z","modified":"2026-07-14T18:32:11Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:09:28.885137Z"}],"nvd":[{"id":"CVE-2026-54988","description":"Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.","status":"published","published":"2026-07-14T17:17:06.31Z","modified":"2026-10-14T22:10:00.21Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:12:29.489525Z"}]}}