# CVE-2015-4852: Oracle WebLogic Server Deserialization of Untrusted Data Vulnerability

> CVE-2015-4852: Oracle WebLogic Server Deserialization of Untrusted Data Vulnerability. CVSS 9.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2015-4852
Last updated: 2025-10-21T23:55:57Z

- Published: 2015-11-18 15:00 UTC · Updated: 2025-10-21 23:55 UTC · Assigner: oracle
- CVSS: 9.8 (CVSS 3.1) · Severity: Critical · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS: 95.0%, 100th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2021-11-03, federal due date 2022-05-03, ransomware use: Unknown

## Description

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.

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- Oracle: WebLogic Server

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2015-4852)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2015-4852)
- [http://foxglovesecurity.com/2015/11/06/what-do-weblogic-websphere-jboss-jenkins-opennms-and-your-application-have-in-common-this-vulnerability/](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](http://packetstormsecurity.com/files/152268/Oracle-Weblogic-Server-Deserialization-Remote-Code-Execution.html)
- [https://blogs.oracle.com/security/entry/security\_alert\_cve\_2015\_4852](https://blogs.oracle.com/security/entry/security_alert_cve_2015_4852)
- [https://github.com/foxglovesec/JavaUnserializeExploits/blob/master/weblogic.py](https://github.com/foxglovesec/JavaUnserializeExploits/blob/master/weblogic.py)
- [https://www.exploit-db.com/exploits/42806/](https://www.exploit-db.com/exploits/42806/)
- [https://www.exploit-db.com/exploits/46628/](https://www.exploit-db.com/exploits/46628/)
- [http://www.openwall.com/lists/oss-security/2015/11/17/19](http://www.openwall.com/lists/oss-security/2015/11/17/19)
- [http://www.oracle.com/technetwork/security-advisory/cpuapr2017-3236618.html](http://www.oracle.com/technetwork/security-advisory/cpuapr2017-3236618.html)
- [http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html](http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html)
- [http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html](http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html)
- [http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html](http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html)
- [http://www.oracle.com/technetwork/topics/security/alert-cve-2015-4852-2763333.html](http://www.oracle.com/technetwork/topics/security/alert-cve-2015-4852-2763333.html)
- [http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html](http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html)
- [http://www.securityfocus.com/bid/77539](http://www.securityfocus.com/bid/77539)
- [http://www.securitytracker.com/id/1038292](http://www.securitytracker.com/id/1038292)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2015-4852 · Markdown: https://rewindex.com/cve/CVE-2015-4852.md · JSON: https://rewindex.com/api/v1/cves/CVE-2015-4852 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:49:24.331Z