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Vulnerabilities

Vulnerability · CVE-2015-4852

Oracle WebLogic Server Deserialization of Untrusted Data Vulnerability

Published Nov 18, 2015 · catalog updated Jun 16, 2026 · Oracle WebLogic Server

Patch now

CVE-2015-4852 is in the CISA known-exploited catalog, due May 3, 2022. Confirm Oracle WebLogic Server against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
Critical9.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
94.99%
Remediation
Remediation guidance
Affected products
cpe oracle/storagetek tape analytics sw tool · cpe oracle/virtual desktop infrastructure · cpe oracle/weblogic server · vendor Oracle WebLogic Server

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe oracle/storagetek tape analytics sw tool2.3
  • cpe oracle/virtual desktop infrastructureversion unspecified
  • cpe oracle/weblogic server10.3.6.0.0
  • cpe oracle/weblogic server12.1.2.0.0
  • cpe oracle/weblogic server12.1.3.0.0
  • cpe oracle/weblogic server12.2.1.0.0
  • vendor Oracle WebLogic Serverversion unspecified

How to fix CVE-2015-4852

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2015-4852 is in the CISA known-exploited catalog, due May 3, 2022. Confirm Oracle WebLogic Server against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with oracle/storagetek tape analytics sw tool 2.3; oracle/weblogic server 10.3.6.0.0; oracle/weblogic server 12.1.2.0.0; oracle/weblogic server 12.1.3.0.0. Apply updates per vendor instructions.

What should an analyst verify?

CWE-502: Deserialization of Untrusted Data. EPSS 94.99%. The CISA KEV listing is the exploitation evidence. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 18, 2015 · Catalog

    Detected

    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.

  2. Nov 3, 2021 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. May 3, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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.

Sources

  • CISA KEVConfirmed exploitationCVE-2015-4852

    Oracle WebLogic Server contains a deserialization of untrusted data vulnerability within Apache Commons, which can allow for for remote code execution.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2015-4852

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2015-4852

    30-day exploitation probability 95.0%

    first.org
  • Exploit DatabasePublic exploit reference42806

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Exploit DatabasePublic exploit reference44552

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Exploit DatabasePublic exploit reference46628

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Metasploit ModulesPublic exploit moduleexploit_multi/misc/weblogic_deserialize_rawobject

    Public module reference (excellent). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDVulnerability recordCVE-2015-4852

    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

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2015-4852

    Oracle WebLogic Server contains a deserialization of untrusted data vulnerability within Apache Commons, which can allow for for remote code execution.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.