{"id":"CVE-2026-70062","aliases":["EUVD-2026-99146","GHSA-g6pv-h986-vxr8"],"status":"published","title":"Windows libarchive Remote Code Execution Vulnerability","description":"Double free in Windows Libarchive allows an unauthorized attacker to execute code over a network.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0077,"percentile":0.55959,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-415"],"published":"2026-10-13T18:59:37Z","modified":"2026-11-10T20:35:01Z","products":[{"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 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)"},{"vendor":"microsoft","product":"windows_10_1809"},{"vendor":"microsoft","product":"windows_10_21h2"},{"vendor":"microsoft","product":"windows_10_22h2"},{"vendor":"microsoft","product":"windows_11_23h2"},{"vendor":"microsoft","product":"windows_11_24h2"},{"vendor":"microsoft","product":"windows_11_25h2"},{"vendor":"microsoft","product":"windows_11_26h1"},{"vendor":"microsoft","product":"windows_11_26h2"},{"vendor":"microsoft","product":"windows_server_2019"},{"vendor":"microsoft","product":"windows_server_2022"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70062","tags":["vendor-advisory","patch","Vendor Advisory","Patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70062"},{"url":"https://github.com/advisories/GHSA-g6pv-h986-vxr8"}],"sources":{"cve":[{"id":"CVE-2026-70062","title":"Windows libarchive Remote Code Execution Vulnerability","description":"Double free in Windows Libarchive allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-10-13T18:59:37.216Z","modified":"2026-11-10T20:35:01.225Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-415"],"updated_at":"2026-11-10T22:18:27.902968Z"}],"euvd":[{"id":"EUVD-2026-99146","description":"Double free in Windows Libarchive allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-10-13T18:59:37Z","modified":"2026-11-10T20:35:01Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-10T21:23:23.709697Z"}],"ghsa":[{"id":"GHSA-g6pv-h986-vxr8","title":"Double free in Windows Libarchive allows an unauthorized attacker to execute code over a network.","description":"Double free in Windows Libarchive allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-10-13T21:34:02Z","modified":"2026-10-13T21:34:08Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-415"],"updated_at":"2026-11-02T15:13:14.588915Z"}],"nvd":[{"id":"CVE-2026-70062","description":"Double free in Windows Libarchive allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-10-13T19:19:17.27Z","modified":"2026-10-28T16:31:23.88Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-415"],"updated_at":"2026-11-02T14:12:57.603498Z"}]}}