{"id":"CVE-2026-78439","aliases":["EUVD-2026-73296","GHSA-6cw8-rp4c-jfpf"],"status":"published","title":"Microsoft Office Graphics Component Remote Code Execution Vulnerability","description":"Stack-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00837,"percentile":0.58197,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121"],"published":"2026-09-08T17:13:37Z","modified":"2026-11-10T21:32:23Z","products":[{"vendor":"microsoft","product":"microsoft office 365 for mac"},{"vendor":"microsoft","product":"microsoft office for android"},{"vendor":"microsoft","product":"microsoft office ltsc for mac 2021"},{"vendor":"microsoft","product":"microsoft office ltsc for mac 2024"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78439","tags":["vendor-advisory","patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-78439"},{"url":"https://github.com/advisories/GHSA-6cw8-rp4c-jfpf"}],"sources":{"cve":[{"id":"CVE-2026-78439","title":"Microsoft Office Graphics Component Remote Code Execution Vulnerability","description":"Stack-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-09-08T17:13:37.084Z","modified":"2026-11-10T21:32:23.933Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-121"],"updated_at":"2026-11-10T22:48:53.557052Z"}],"euvd":[{"id":"EUVD-2026-73296","description":"Stack-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-09-08T17:13:37Z","modified":"2026-11-10T21:32:23Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-10T22:23:51.958672Z"}],"ghsa":[{"id":"GHSA-6cw8-rp4c-jfpf","title":"Stack-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to...","description":"Stack-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-09-08T18:33:23Z","modified":"2026-09-08T18:34:00Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T15:11:34.019342Z"}],"nvd":[{"id":"CVE-2026-78439","description":"Stack-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-09-08T18:20:41.757Z","modified":"2026-09-17T20:18:28.707Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:12:45.264578Z"}]}}