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 products 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 patch CVE-2015-4852?

No patch has shipped for CVE-2015-4852 yet — track the oracle storagetek tape analytics sw tool advisory for a fixed release and apply the workarounds below in the meantime.

How do I detect CVE-2015-4852 across my infrastructure?

Inventory every oracle storagetek tape analytics sw tool deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for remote code execution at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.

How do I mitigate CVE-2015-4852 if there is no patch (or I can't update yet)?

Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.

How does O3 Security protect against CVE-2015-4852?

O3 detects and blocks CVE-2015-4852 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.

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 96.0%, 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 June 17, 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

Jun 17, 2026

Affected

0 pkgs

Patched

None yet

Exploits

15 known

EPSS Exploitation Probability

via FIRST.org ↗

96.0%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-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

EDB-44552remotemultiple

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

by Nikhil Sreekumar · Jul 20, 2016

Exploit-DB Source

Detection & mitigation playbook

Vendor / appliance

Detect
Inventory every oracle storagetek tape analytics sw tool deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for remote code execution at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.
Remediation status
No patch has shipped for CVE-2015-4852 yet — track the oracle storagetek tape analytics sw tool advisory for a fixed release and apply the workarounds below in the meantime.
Mitigate without a patch
Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.
How O3 protects you
O3 detects and blocks CVE-2015-4852 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.

Tailored to CVE-2015-4852. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

O3 Security · Runtime Protection

Is CVE-2015-4852 being exploited in your environment?

O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2015-4852 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.

Protect my workloads How runtime protection works

CVE-2015-4852

EPSS Exploitation Probability

Description

Affected Products

Detection & mitigation playbook

Detect

Remediation status

Mitigate without a patch

How O3 protects you

Frequently Asked Questions

Is CVE-2015-4852 being exploited in your environment?