VulnerabilityAnalyzed

CVE-2015-4852

Oracle WebLogic Server Deserialization of Untrusted Data Vulnerability

KEVEXPLOIT ×3 ✓CRITICAL 9.8EPSS 95.0%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 3 May 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

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.

CVSS 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 94.99% probability · 100th percentile
Public exploits: 3 in Exploit-DB · verified · first 20 July 2016
CISA KEV: Listed 3 November 2021 · due 3 May 2022
Weakness: CWE-502
Affected: oracle/virtual desktop infrastructure · oracle/storagetek tape analytics sw tool · oracle/weblogic server
Source: secalert_us@oracle.com

EPSS trend

EPSS 95.0% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

CISA notes

Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2015-4852

Public exploits (3)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-ID	Title	Type	Published	Verified
EDB-46628 source ↗	Oracle Weblogic Server Deserialization RCE - Raw Object (Metasploit)multiple · Metasploit	remote	28 March 2019	yes
EDB-42806 source ↗	Oracle WebLogic Server 10.3.6.0 - Java Deserialization Remote Code Executionjava · SlidingWindow	remote	27 September 2017	no
EDB-44552 source ↗	Websphere/JBoss/OpenNMS/Symantec Endpoint Protection Manager - Java Deserialization Remote Code Executionmultiple · Nikhil Sreekumar	remote	20 July 2016	no

References

http://foxglovesecurity.com/2015/11/06/what-do-weblogic-websphere-jboss-jenkins-opennms-and-your-application-have-in-common-this-vulnerability/Exploit
http://packetstormsecurity.com/files/152268/Oracle-Weblogic-Server-Deserialization-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
http://www.openwall.com/lists/oss-security/2015/11/17/19Mailing List, Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpuapr2017-3236618.htmlPatch
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.htmlPatch, Vendor Advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.htmlPatch, Vendor Advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.htmlPatch, Vendor Advisory
http://www.oracle.com/technetwork/topics/security/alert-cve-2015-4852-2763333.htmlVendor Advisory
http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.htmlPatch, Vendor Advisory
http://www.securityfocus.com/bid/77539Broken Link
http://www.securitytracker.com/id/1038292Broken Link
https://blogs.oracle.com/security/entry/security_alert_cve_2015_4852Broken Link
https://github.com/foxglovesec/JavaUnserializeExploits/blob/master/weblogic.pyProduct
https://www.exploit-db.com/exploits/42806/Exploit, Third Party Advisory, VDB Entry
https://www.exploit-db.com/exploits/46628/Exploit, Third Party Advisory, VDB Entry
http://foxglovesecurity.com/2015/11/06/what-do-weblogic-websphere-jboss-jenkins-opennms-and-your-application-have-in-common-this-vulnerability/Exploit
http://packetstormsecurity.com/files/152268/Oracle-Weblogic-Server-Deserialization-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
http://www.openwall.com/lists/oss-security/2015/11/17/19Mailing List, Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpuapr2017-3236618.htmlPatch
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.htmlPatch, Vendor Advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.htmlPatch, Vendor Advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.htmlPatch, Vendor Advisory
http://www.oracle.com/technetwork/topics/security/alert-cve-2015-4852-2763333.htmlVendor Advisory
http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.htmlPatch, Vendor Advisory
http://www.securityfocus.com/bid/77539Broken Link
http://www.securitytracker.com/id/1038292Broken Link
https://blogs.oracle.com/security/entry/security_alert_cve_2015_4852Broken Link
https://github.com/foxglovesec/JavaUnserializeExploits/blob/master/weblogic.pyProduct
https://www.exploit-db.com/exploits/42806/Exploit, Third Party Advisory, VDB Entry
https://www.exploit-db.com/exploits/46628/Exploit, Third Party Advisory, VDB Entry

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.