CISA KEV · Known exploitedCritical

CVE-2015-4852

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.

CVSS: 9.8
EPSS: 96.0%
CISA KEV: Listed
Published: 2015.11.19

PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV

Exploit probability96.0%

Technical severityCVSS 9.8

Vulnerability overview

Affected product and versions

Product: Oracle WebLogic Server
Affected versions: <= 3.5.2, 2.3, 10.3.6.0.0, 12.1.2.0.0, 12.1.3.0.0, 12.2.1.0.0
Fixed versions: No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

CISA required action

Apply updates per vendor instructions.

Due date: 2022.05.03

1
Identify
Confirm that Oracle WebLogic Server and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-502
KEV added: 2021.11.03
Ransomware use: 미확인