{"id":"CVE-2026-50328","aliases":["EUVD-2026-43856","GHSA-c7hq-7wfr-2j8f"],"status":"published","title":"Windows Server Update Service (WSUS) Tampering Vulnerability","description":"Uncaught exception in Windows Server Update Service allows an unauthorized attacker to perform tampering over a network.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01232,"percentile":0.69223,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20","CWE-248"],"published":"2026-07-14T17:06:23Z","modified":"2026-11-01T17:33:59Z","products":[{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows server 2012"},{"vendor":"microsoft","product":"windows server 2012 (server core installation)"},{"vendor":"microsoft","product":"windows server 2012 r2"},{"vendor":"microsoft","product":"windows server 2012 r2 (server core installation)"},{"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)"},{"vendor":"microsoft","product":"windows_10_1607"},{"vendor":"microsoft","product":"windows_10_1809"},{"vendor":"microsoft","product":"windows_server_2012"},{"vendor":"microsoft","product":"windows_server_2016"},{"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-2026-50328","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50328"},{"url":"https://github.com/advisories/GHSA-c7hq-7wfr-2j8f"}],"sources":{"cve":[{"id":"CVE-2026-50328","title":"Windows Server Update Service (WSUS) Tampering Vulnerability","description":"Uncaught exception in Windows Server Update Service allows an unauthorized attacker to perform tampering over a network.","status":"published","published":"2026-07-14T17:06:23.499Z","modified":"2026-11-01T17:33:59.756Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-248","CWE-20"],"updated_at":"2026-11-02T14:20:08.734143Z"}],"euvd":[{"id":"EUVD-2026-43856","description":"Uncaught exception in Windows Server Update Service allows an unauthorized attacker to perform tampering over a network.","status":"published","published":"2026-07-14T17:06:23Z","modified":"2026-11-01T17:33:59Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T16:58:48.785826Z"}],"ghsa":[{"id":"GHSA-c7hq-7wfr-2j8f","title":"Uncaught exception in Windows Server Update Service allows an unauthorized attacker to perform...","description":"Uncaught exception in Windows Server Update Service allows an unauthorized attacker to perform tampering over a network.","status":"published","published":"2026-07-14T18:32:15Z","modified":"2026-07-14T18:32:22Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T15:09:28.885137Z"}],"nvd":[{"id":"CVE-2026-50328","description":"Uncaught exception in Windows Server Update Service allows an unauthorized attacker to perform tampering over a network.","status":"published","published":"2026-07-14T18:17:31.783Z","modified":"2026-07-20T17:00:48.883Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-20","CWE-248"],"updated_at":"2026-11-02T14:12:29.489525Z"}]}}