CVE-2015-4852VulnerabilityPublished 11/03/2021Updated 10/24/2026

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

Affects Oracle WebLogic ServerSource CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 11/03/2021
KEV deadline: 05/03/2022
EPSS: 95.0% chance of exploitation in 30 days – higher than 99% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2015-4852 (opens in a new tab)

Description

CVE-2015-4852 is a deserialization of untrusted data vulnerability in Oracle WebLogic Server's use of Apache Commons. This flaw allows remote attackers to execute arbitrary code on affected systems. The vulnerability has been exploited in the wild, indicating active threat activity. No specific affected versions or patch information is provided in the input data.

Summary

Oracle WebLogic Server contains a vulnerability (CVE-2015-4852) related to deserialization of untrusted data within Apache Commons libraries. This vulnerability can be exploited remotely to achieve arbitrary code execution. It is classified under CWE-502 (Deserialization of Untrusted Data). The vulnerability has been observed in active exploitation campaigns, highlighting its critical nature. However, no explicit patch or remediation details are included in the provided information.

Impact

Successful exploitation of this vulnerability allows remote attackers to execute arbitrary code on the affected Oracle WebLogic Server instances. This can lead to full system compromise, data breaches, and disruption of services. The presence of known exploits in the wild confirms the practical risk to vulnerable environments.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until official patches or mitigations are confirmed, organizations should monitor Oracle's security advisories and apply recommended updates promptly once available.

Weaknesses

CWE-502Deserialization of Untrusted Data (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 08:57:01 UTC

Weaknesses

References

Related threats