{"id":"CVE-2026-78439","title":"Stack-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.","summary":"Stack-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cwe":["CWE-121"],"vendor":"Microsoft","product":"Microsoft Office 365 for Mac","affected":["office_365_for_mac >= 1.0.0 < 16.113.26091433","office_for_android >= 16.0.1 < 16.0.20430.20000","office_ltsc_for_mac_2021 >= 16.0.1 < 16.113.26091433","office_ltsc_for_mac_2024 >= 16.0.0 < 16.113.26091433"],"published":"2026-09-08","updated":"2026-09-17","sourceUpdated":"2026-09-17T20:18:28.707","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-78439","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78439","label":"secure@microsoft.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-09T04:21:14.775387Z"},"epss":0.00618,"epssPercentile":0.47929,"ingestedAt":"2026-09-08T19:08:49.628Z","slug":"CVE-2026-78439","body":"## Overview\n\nStack-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":49,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}