{"id":"CVE-2020-2883","aliases":["EUVD-2020-22676","GHSA-9x8q-p3qp-r24w"],"status":"published","title":"Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core)...","description":"Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0 and 12.2.1.4.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via IIOP, T3 to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.0 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).","severity":{"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":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.94582,"percentile":0.99855,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":true,"fix_available":false},"published":"2020-04-15T13:29:50Z","modified":"2026-06-17T03:13:10Z","kev":{"date_added":"2025-01-07","due_date":"2025-01-28","required_action":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","known_ransomware_use":"Unknown"},"exploitation":[{"source":"euvd","since":"2025-01-07"},{"source":"kev","since":"2025-01-07"}],"exploits":[{"source":"metasploit","id":"exploit/multi/misc/weblogic_deserialize_badattr_extcomp","title":"WebLogic Server Deserialization RCE BadAttributeValueExpException ExtComp","type":"exploit","platform":"Linux,Unix,Windows","date":"2020-04-30","verified":true,"url":"https://www.rapid7.com/db/modules/exploit/multi/misc/weblogic_deserialize_badattr_extcomp"},{"source":"pocgithub","id":"Y4er/CVE-2020-2883","title":"Y4er/CVE-2020-2883","date":"2020-05-10","url":"https://github.com/Y4er/CVE-2020-2883"},{"source":"pocgithub","id":"MagicZer0/Weblogic_CVE-2020-2883_POC","title":"MagicZer0/Weblogic_CVE-2020-2883_POC","date":"2020-05-13","url":"https://github.com/MagicZer0/Weblogic_CVE-2020-2883_POC"},{"source":"pocgithub","id":"ZZZWD/CVE-2020-2883","title":"ZZZWD/CVE-2020-2883","date":"2020-06-09","url":"https://github.com/ZZZWD/CVE-2020-2883"},{"source":"pocgithub","id":"Y4er/WebLogic-Shiro-shell","title":"Y4er/WebLogic-Shiro-shell","date":"2020-08-19","url":"https://github.com/Y4er/WebLogic-Shiro-shell"},{"source":"pocgithub","id":"FancyDoesSecurity/CVE-2020-2883","title":"FancyDoesSecurity/CVE-2020-2883","date":"2020-10-14","url":"https://github.com/FancyDoesSecurity/CVE-2020-2883"},{"source":"pocgithub","id":"Al1ex/CVE-2020-2883","title":"Al1ex/CVE-2020-2883","date":"2020-11-26","url":"https://github.com/Al1ex/CVE-2020-2883"},{"source":"pocgithub","id":"Qynklee/POC_CVE-2020-2883","title":"Qynklee/POC_CVE-2020-2883","date":"2021-11-15","url":"https://github.com/Qynklee/POC_CVE-2020-2883"},{"source":"metasploit","id":"exploit/multi/http/oracle_access_manager_rce_cve_2021_35587","title":"Oracle Access Manager unauthenticated Remote Code Execution","type":"exploit","platform":"Linux,Unix,Windows","date":"2022-01-19","verified":true,"url":"https://www.rapid7.com/db/modules/exploit/multi/http/oracle_access_manager_rce_cve_2021_35587"},{"source":"nuclei","id":"CVE-2020-2883","title":"Oracle WebLogic Server - Remote Code Execution","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/javascript/cves/2020/CVE-2020-2883.yaml"}],"products":[{"vendor":"oracle","product":"weblogic server"},{"vendor":"oracle","product":"weblogic_server"},{"vendor":"oracle corporation","product":"weblogic server"}],"references":[{"url":"https://www.oracle.com/security-alerts/cpuapr2020.html","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-20-504/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-20-570/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://packetstormsecurity.com/files/157950/WebLogic-Server-Deserialization-Remote-Code-Execution.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-2883","tags":["government-resource","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-2883"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-20-504"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-20-570"},{"url":"https://github.com/advisories/GHSA-9x8q-p3qp-r24w"}],"sources":{"cve":[{"id":"CVE-2020-2883","description":"Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0 and 12.2.1.4.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via IIOP, T3 to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.0 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).","status":"published","published":"2020-04-15T13:29:50Z","modified":"2026-01-12T21:02:18.109Z","cvss":[{"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":"cna"}],"updated_at":"2026-11-02T14:35:51.563355Z"}],"euvd":[{"id":"EUVD-2020-22676","description":"Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0 and 12.2.1.4.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via IIOP, T3 to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.0 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).","status":"published","published":"2020-04-15T13:29:50Z","modified":"2026-01-12T21:02:18Z","cvss":[{"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"}],"exploited_since":"2025-01-07","updated_at":"2026-11-02T19:48:53.22038Z"}],"ghsa":[{"id":"GHSA-9x8q-p3qp-r24w","title":"Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core)...","description":"Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0 and 12.2.1.4.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via T3 to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.0 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).","status":"published","published":"2022-05-24T17:15:05Z","modified":"2025-10-22T00:31:52Z","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"}],"updated_at":"2026-11-02T15:04:04.176931Z"}],"kev":[{"id":"CVE-2020-2883","title":"Oracle WebLogic Server Unspecified Vulnerability","description":"Oracle WebLogic Server, a product within the Fusion Middleware suite, contains an unspecified vulnerability exploitable by an unauthenticated attacker with network access via IIOP or T3.","kev":{"date_added":"2025-01-07","due_date":"2025-01-28","required_action":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","known_ransomware_use":"Unknown"},"updated_at":"2026-11-02T17:00:16.234141Z"}],"nvd":[{"id":"CVE-2020-2883","description":"Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0 and 12.2.1.4.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via IIOP, T3 to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.0 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).","status":"published","published":"2020-04-15T14:15:33.513Z","modified":"2026-06-17T03:13:10.183Z","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":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:05:59.125695Z"}]}}