{"id":"CVE-2015-4852","published":"2015-11-18T15:59:00Z","modified":"2026-06-17T00:28:02Z","title":"Oracle WebLogic Server Deserialization of Untrusted Data Vulnerability","vendor":"Oracle","product":"WebLogic Server","tier":"core","eol":null,"description":{"text":"The WLS Security component in Oracle WebLogic Server 10.3.6.0, 12.1.2.0, 12.1.3.0, and 12.2.1.0 allows remote attackers to execute arbitrary commands via a crafted serialized Java object in T3 protocol traffic to TCP port 7001, related to oracle_common/modules/com.bea.core.apache.commons.collections.jar. NOTE: the scope of this CVE is limited to the WebLogic Server product.","provenance":"source","from":"NVD"},"summary":{"text":"The flaw is a deserialization of untrusted data weakness in the WLS Security component of Oracle WebLogic Server, affecting versions 10.3.6.0, 12.1.2.0, 12.1.3.0, and 12.2.1.0, and related to the bundled oracle_common/modules/com.bea.core.apache.commons.collections.jar library. A remote attacker with no authentication and no user interaction can execute arbitrary commands by sending a crafted serialized Java object in T3 protocol traffic to TCP port 7001.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:09:45Z"},"cvss":{"score":9.8,"severity":"CRITICAL","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.94991,"percentile":0.99861,"date":"2026-10-28","provenance":"source"},"kev":{"dateAdded":"2021-11-03","dueDate":"2022-05-03","ransomware":false,"requiredAction":"Apply updates per vendor instructions.","notes":"https://nvd.nist.gov/vuln/detail/CVE-2015-4852","provenance":"source"},"vulncheckKev":{"dateAdded":"2020-10-20","exploitedFirstSeen":"2020-10-20","ransomware":false,"evidence":[{"url":"https://cisa.gov/news-events/cybersecurity-advisories/aa20-275a","date":"2020-10-20"},{"url":"https://media.defense.gov/2020/Oct/20/2002519884/-1/-1/0/CSA_CHINESE_EXPLOIT_VULNERABILITIES_UOO179811.PDF","date":"2020-10-20"},{"url":"https://us-cert.cisa.gov/ncas/alerts/aa20-275a","date":"2020-10-20"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2021-11-03"}],"evidenceTotal":4,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"},{"name":"Actively_Exploited_Kev | Oct 18, 2026","url":"https://otx.alienvault.com/pulse/6ad38c22e1848f8189d1c121","created":"2026-10-17"}],"provenance":"machine"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"references":[{"url":"http://foxglovesecurity.com/2015/11/06/what-do-weblogic-websphere-jboss-jenkins-opennms-and-your-application-have-in-common-this-vulnerability/","tags":["Exploit"]},{"url":"http://packetstormsecurity.com/files/152268/Oracle-Weblogic-Server-Deserialization-Remote-Code-Execution.html","tags":["Exploit","Third Party Advisory","VDB Entry"]},{"url":"http://www.openwall.com/lists/oss-security/2015/11/17/19","tags":["Mailing List","Third Party 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Link"]},{"url":"https://github.com/foxglovesec/JavaUnserializeExploits/blob/master/weblogic.py","tags":["Product"]},{"url":"https://www.exploit-db.com/exploits/42806/","tags":["Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://www.exploit-db.com/exploits/46628/","tags":["Exploit","Third Party Advisory","VDB Entry"]},{"url":"http://foxglovesecurity.com/2015/11/06/what-do-weblogic-websphere-jboss-jenkins-opennms-and-your-application-have-in-common-this-vulnerability/","tags":["Exploit"]},{"url":"http://packetstormsecurity.com/files/152268/Oracle-Weblogic-Server-Deserialization-Remote-Code-Execution.html","tags":["Exploit","Third Party Advisory","VDB Entry"]},{"url":"http://www.openwall.com/lists/oss-security/2015/11/17/19","tags":["Mailing List","Third Party Advisory"]},{"url":"http://www.oracle.com/technetwork/security-advisory/cpuapr2017-3236618.html","tags":["Patch"]},{"url":"http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html","tags":["Patch","Vendor Advisory"]},{"url":"http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html","tags":["Patch","Vendor Advisory"]},{"url":"http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html","tags":["Patch","Vendor Advisory"]},{"url":"http://www.oracle.com/technetwork/topics/security/alert-cve-2015-4852-2763333.html","tags":["Vendor Advisory"]},{"url":"http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html","tags":["Patch","Vendor Advisory"]},{"url":"http://www.securityfocus.com/bid/77539","tags":["Broken Link"]},{"url":"http://www.securitytracker.com/id/1038292","tags":["Broken Link"]},{"url":"https://blogs.oracle.com/security/entry/security_alert_cve_2015_4852","tags":["Broken Link"]},{"url":"https://github.com/foxglovesec/JavaUnserializeExploits/blob/master/weblogic.py","tags":["Product"]},{"url":"https://www.exploit-db.com/exploits/42806/","tags":["Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://www.exploit-db.com/exploits/46628/","tags":["Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-4852","tags":["US Government Resource"]}],"techniques":[{"id":"T1190","name":"Exploit Public-Facing Application","tactics":["initial-access"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: remote unauthenticated exploit of exposed WebLogic service","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"allows remote attackers to execute arbitrary commands via a crafted serialized Java object in T3 protocol traffic","start":96,"end":209}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1059","name":"Command and Scripting Interpreter","tactics":["execution"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: deserialization yields arbitrary command execution","mappingType":"primary_impact","evidence":[{"from":"description","quote":"execute arbitrary commands via a crafted serialized Java object","start":123,"end":186}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2015-4869","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2015-4869","exploited":true,"exploitedSince":"2021-11-03","provenance":"source"},"exploits":[{"id":42806,"url":"https://www.exploit-db.com/exploits/42806","title":"Oracle WebLogic Server 10.3.6.0 - Java Deserialization Remote Code Execution","type":"remote","platform":"java","date":"2017-09-27","verified":false,"provenance":"source"},{"id":44552,"url":"https://www.exploit-db.com/exploits/44552","title":"Websphere/JBoss/OpenNMS/Symantec Endpoint Protection Manager - Java Deserialization Remote Code Execution","type":"remote","platform":"multiple","date":"2016-07-20","verified":false,"provenance":"source"},{"id":46628,"url":"https://www.exploit-db.com/exploits/46628","title":"Oracle Weblogic Server Deserialization RCE - Raw Object (Metasploit)","type":"remote","platform":"multiple","date":"2019-03-28","verified":true,"provenance":"source"}],"exploitSources":{"exploitdb":{"count":3,"earliest":"2016-07-20"},"pocGithub":{"count":4,"skipped":0,"earliest":"2016-03-03","earliestUrl":"https://github.com/roo7break/serialator","repos":[{"name":"roo7break/serialator","url":"https://github.com/roo7break/serialator","stars":31,"created":"2016-03-03"},{"name":"zhzhdoai/Weblogic_Vuln","url":"https://github.com/zhzhdoai/Weblogic_Vuln","stars":17,"created":"2020-08-10"},{"name":"AndersonSingh/serialization-vulnerability-scanner","url":"https://github.com/AndersonSingh/serialization-vulnerability-scanner","stars":2,"created":"2017-11-25"},{"name":"nex1less/CVE-2015-4852","url":"https://github.com/nex1less/CVE-2015-4852","stars":1,"created":"2020-11-16"}]},"metasploit":[{"name":"Oracle Weblogic Server Deserialization RCE - Raw Object","module":"exploit/multi/misc/weblogic_deserialize_rawobject","type":"exploit","disclosureDate":"2015-01-28","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/misc/weblogic_deserialize_rawobject.rb"}],"first":{"date":"2015-01-28","source":"Metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/misc/weblogic_deserialize_rawobject.rb"},"provenance":"source"},"exploitRefs":["http://foxglovesecurity.com/2015/11/06/what-do-weblogic-websphere-jboss-jenkins-opennms-and-your-application-have-in-common-this-vulnerability/","http://packetstormsecurity.com/files/152268/Oracle-Weblogic-Server-Deserialization-Remote-Code-Execution.html","https://www.exploit-db.com/exploits/42806/","https://www.exploit-db.com/exploits/46628/","https://github.com/foxglovesec/JavaUnserializeExploits/blob/master/weblogic.py"],"flow":[{"stage":"exploitation","techniques":["T1190"],"provenance":"ai"},{"stage":"primary","techniques":["T1059"],"provenance":"ai"}],"timeline":[{"date":"2015-01-28","kind":"exploit-public","label":"First 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unknown"}]},"lineage":{"familyId":"fam-class-oracle-weblogic-server-cwe-502"}}