{"id":"CVE-2021-3287","aliases":["EUVD-2021-26622","GHSA-9342-c88m-74xw"],"status":"published","title":"Zoho ManageEngine OpManager before 12.5.329 allows unauthenticated Remote Code Execution due to a...","description":"Zoho ManageEngine OpManager before 12.5.329 allows unauthenticated Remote Code Execution due to a general bypass in the deserialization class.","severity":{"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","from":"nvd"},"epss":{"day":"2026-11-09","score":0.51332,"percentile":0.98947,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-502"],"published":"2021-04-22T12:58:00Z","modified":"2026-06-17T04:04:53Z","exploits":[{"source":"metasploit","id":"exploit/multi/http/opmanager_sumpdu_deserialization","title":"ManageEngine OpManager SumPDU Java Deserialization","type":"exploit","platform":"Linux,Python,Unix,Windows","date":"2021-07-26","verified":true,"url":"https://www.rapid7.com/db/modules/exploit/multi/http/opmanager_sumpdu_deserialization"},{"source":"nuclei","id":"CVE-2021-3287","title":"Zoho ManageEngine OpManager \u003c 12.5.329 - Remote Code Execution","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-3287.yaml"}],"products":[{"vendor":"zohocorp","product":"manageengine_opmanager"}],"references":[{"url":"https://www.manageengine.com/network-monitoring/help/read-me-complete.html#125329","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory"]},{"url":"http://packetstormsecurity.com/files/164231/ManageEngine-OpManager-SumPDU-Java-Deserialization.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3287"},{"url":"https://github.com/advisories/GHSA-9342-c88m-74xw"}],"sources":{"cve":[{"id":"CVE-2021-3287","description":"Zoho ManageEngine OpManager before 12.5.329 allows unauthenticated Remote Code Execution due to a general bypass in the deserialization class.","status":"published","published":"2021-04-22T12:58:00Z","modified":"2024-08-03T16:53:16.496Z","updated_at":"2026-11-02T14:33:03.671751Z"}],"euvd":[{"id":"EUVD-2021-26622","description":"Zoho ManageEngine OpManager before 12.5.329 allows unauthenticated Remote Code Execution due to a general bypass in the deserialization class.","status":"published","published":"2021-04-22T12:58:00Z","modified":"2024-08-03T16:53:16Z","updated_at":"2026-11-03T03:25:13.531128Z"}],"ghsa":[{"id":"GHSA-9342-c88m-74xw","title":"Zoho ManageEngine OpManager before 12.5.329 allows unauthenticated Remote Code Execution due to a...","description":"Zoho ManageEngine OpManager before 12.5.329 allows unauthenticated Remote Code Execution due to a general bypass in the deserialization class.","status":"published","published":"2022-05-24T17:48:08Z","modified":"2023-01-29T05:07:19Z","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"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:46:09.625645Z"}],"nvd":[{"id":"CVE-2021-3287","description":"Zoho ManageEngine OpManager before 12.5.329 allows unauthenticated Remote Code Execution due to a general bypass in the deserialization class.","status":"published","published":"2021-04-22T13:15:07.97Z","modified":"2026-06-17T04:04:53.7Z","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":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:06:52.03307Z"}]}}