{"id":"CVE-2026-122171","aliases":["EUVD-2026-122494","GHSA-3h74-8cg4-9q3m"],"status":"published","title":"Microsoft XPS Document Converter Remote Code Execution Vulnerability","description":"Heap-based buffer overflow in Microsoft XPS Document Converter 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":"2026-11-12","score":0.00948,"percentile":0.61657,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-122"],"published":"2026-11-10T18:24:07Z","modified":"2026-11-10T21:33:53Z","products":[{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows 10 version 21h2"},{"vendor":"microsoft","product":"windows 10 version 22h2"},{"vendor":"microsoft","product":"windows 11 version 23h2"},{"vendor":"microsoft","product":"windows 11 version 24h2"},{"vendor":"microsoft","product":"windows 11 version 25h2"},{"vendor":"microsoft","product":"windows 11 version 26h1"},{"vendor":"microsoft","product":"windows 11 version 26h2"},{"vendor":"microsoft","product":"windows server 2016"},{"vendor":"microsoft","product":"windows server 2016 (server core installation)"},{"vendor":"microsoft","product":"windows server 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"vendor":"microsoft","product":"windows server 2022"},{"vendor":"microsoft","product":"windows server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-122171","tags":["vendor-advisory","patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-122171"},{"url":"https://github.com/advisories/GHSA-3h74-8cg4-9q3m"}],"sources":{"cve":[{"id":"CVE-2026-122171","title":"Microsoft XPS Document Converter Remote Code Execution Vulnerability","description":"Heap-based buffer overflow in Microsoft XPS Document Converter allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-11-10T18:24:07.351Z","modified":"2026-11-12T15:49:09.289Z","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-122"],"updated_at":"2026-11-10T19:39:58.973959Z"}],"euvd":[{"id":"EUVD-2026-122494","description":"Heap-based buffer overflow in Microsoft XPS Document Converter allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-11-10T18:24:07Z","modified":"2026-11-12T15:49:09Z","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":"2026-11-11T00:24:54.978715Z"}],"ghsa":[{"id":"GHSA-3h74-8cg4-9q3m","title":"Heap-based buffer overflow in Microsoft XPS Document Converter allows an unauthorized attacker to...","description":"Heap-based buffer overflow in Microsoft XPS Document Converter allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-11-10T21:33:46Z","modified":"2026-11-10T21:33:53Z","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-122"],"updated_at":"2026-11-10T21:57:54.561479Z"}],"nvd":[{"id":"CVE-2026-122171","description":"Heap-based buffer overflow in Microsoft XPS Document Converter allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-11-10T19:20:34.54Z","modified":"2026-11-10T21:19:03.91Z","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-122"],"updated_at":"2026-11-11T00:21:54.604297Z"}]}}