{"id":"CVE-2020-4450","aliases":["EUVD-2020-25697","GHSA-fvf6-4v5x-94mq"],"status":"published","title":"IBM WebSphere Application Server 8.5 and 9.0 traditional could allow a remote attacker to execute...","description":"IBM WebSphere Application Server 8.5 and 9.0 traditional could allow a remote attacker to execute arbitrary code on the system with a specially-crafted sequence of serialized objects. IBM X-Force ID: 181231.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/UI:N/AV:N/C:H/PR:N/AC:L/I:H/S:U/A:H/RL:O/E:U/RC:C","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.34733,"percentile":0.98436,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-502"],"published":"2020-06-05T12:55:18Z","modified":"2026-06-17T03:20:00Z","products":[{"vendor":"ibm","product":"websphere application server"},{"vendor":"ibm","product":"websphere_application_server"}],"references":[{"url":"https://www.ibm.com/support/pages/node/6220294","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/181231","tags":["vdb-entry","x_refsource_XF","x_transferred","VDB Entry","Vendor Advisory"]},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-20-689/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-4450"},{"url":"https://github.com/advisories/GHSA-fvf6-4v5x-94mq"}],"sources":{"cve":[{"id":"CVE-2020-4450","description":"IBM WebSphere Application Server 8.5 and 9.0 traditional could allow a remote attacker to execute arbitrary code on the system with a specially-crafted sequence of serialized objects. IBM X-Force ID: 181231.","status":"published","published":"2020-06-05T12:55:18.635Z","modified":"2024-09-16T22:30:00.992Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/UI:N/AV:N/C:H/PR:N/AC:L/I:H/S:U/A:H/RL:O/E:U/RC:C","level":"critical","assessor":"cna"}],"updated_at":"2026-11-02T14:35:55.797746Z"}],"euvd":[{"id":"EUVD-2020-25697","description":"IBM WebSphere Application Server 8.5 and 9.0 traditional could allow a remote attacker to execute arbitrary code on the system with a specially-crafted sequence of serialized objects. IBM X-Force ID: 181231.","status":"published","published":"2020-06-05T12:55:18Z","modified":"2024-09-16T22:30:00Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/UI:N/AV:N/C:H/PR:N/AC:L/I:H/S:U/A:H/RL:O/E:U/RC:C","level":"critical"}],"updated_at":"2026-11-03T00:55:02.424132Z"}],"ghsa":[{"id":"GHSA-fvf6-4v5x-94mq","title":"IBM WebSphere Application Server 8.5 and 9.0 traditional could allow a remote attacker to execute...","description":"IBM WebSphere Application Server 8.5 and 9.0 traditional could allow a remote attacker to execute arbitrary code on the system with a specially-crafted sequence of serialized objects. IBM X-Force ID: 181231.","status":"published","published":"2022-05-24T17:19:27Z","modified":"2023-01-29T05:03:07Z","updated_at":"2026-11-02T14:45:14.655741Z"}],"nvd":[{"id":"CVE-2020-4450","description":"IBM WebSphere Application Server 8.5 and 9.0 traditional could allow a remote attacker to execute arbitrary code on the system with a specially-crafted sequence of serialized objects. IBM X-Force ID: 181231.","status":"published","published":"2020-06-05T17:15:11.437Z","modified":"2026-06-17T03:20:00.273Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:06:05.962132Z"}]}}