How severe is CVE-2015-4852?

CVE-2015-4852 has a CVSS score of 9.8/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by CVE-2015-4852?

Affected package information for CVE-2015-4852 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2015-4852?

No fixed version has been published for CVE-2015-4852 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2015-4852 actively exploited in the wild?

Yes. There are 15 known exploit references for CVE-2015-4852, including 3 documented proof-of-concept exploits on Exploit-DB and 10 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2015-4852?

CVE-2015-4852 has an EPSS (Exploit Prediction Scoring System) score of 92.9%, placing it in the 100th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Is CVE-2015-4852 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2015-4852 (Oracle WebLogic Server Deserialization of Untrusted Data Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2021-11-03. CISA required all US federal civilian agencies to remediate this vulnerability by 2022-05-03. The required action was: Apply updates per vendor instructions. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2015-4852?

CVE-2015-4852 is classified as Deserialization of Untrusted Data (CWE-502). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

Which products and versions are affected by CVE-2015-4852?

CVE-2015-4852 affects oracle storagetek tape analytics sw tool (1 version, e.g. 2.3); oracle virtual desktop infrastructure; oracle weblogic server (4 versions, e.g. 10.3.6.0.0, 12.1.2.0.0, 12.1.3.0.0…). Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2015-4852 published, and has it been updated?

CVE-2015-4852 was published on November 18, 2015 and was last updated on April 21, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2021-11-03 — agencies required to remediate by 2022-05-03

CVE-2015-4852

CRITICAL

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…

Published

Nov 18, 2015

Updated

Apr 21, 2026

Affected

0 pkgs

Patched

None yet

Exploits

15 known

EPSS Exploitation Probability

via FIRST.org ↗

92.9%probability of exploitation in next 30 days

Very High Risk100th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

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.

Affected Products

3 products · 6 configurations

Application

storagetek tape analytics sw tooloracle

1 version

2.3

Application

virtual desktop infrastructureoracle

≤ 3.5.2

range

Application

weblogic serveroracle

4 versions

10.3.6.0.012.1.2.0.012.1.3.0.012.2.1.0.0

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-44552remotemultiple

Websphere/JBoss/OpenNMS/Symantec Endpoint Protection Manager - Java Deserialization Remote Code Execution

by Nikhil Sreekumar · Jul 20, 2016

Exploit-DB Source

EDB-46628remotemultiple✓ Verified

Oracle Weblogic Server Deserialization RCE - Raw Object (Metasploit)

by Metasploit · Mar 28, 2019

Exploit-DB Source

EDB-42806remotejava

Oracle WebLogic Server 10.3.6.0 - Java Deserialization Remote Code Execution

by SlidingWindow · Sep 27, 2017

Exploit-DB Source

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2015-4852 in your stack?

O3 detects CVE-2015-4852 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

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