PatchSiren cyber security CVE debrief
CVE-2015-4852 Oracle CVE debrief
CVE-2015-4852 is an Oracle WebLogic Server deserialization of untrusted data vulnerability that CISA lists in its Known Exploited Vulnerabilities catalog. Because it is marked as known exploited, organizations running WebLogic Server should treat remediation as urgent and follow Oracle's update guidance.
- Vendor
- Oracle
- Product
- WebLogic Server
- CVSS
- Unknown
- CISA KEV
- Listed
- Original CVE published
- 2021-11-03
- Original CVE updated
- 2021-11-03
- Advisory published
- 2021-11-03
- Advisory updated
- 2021-11-03
Who should care
Security teams, system administrators, and application owners responsible for Oracle WebLogic Server deployments should care most, especially where instances are internet-facing or difficult to patch quickly.
Technical summary
The vulnerability is described as a deserialization of untrusted data issue in Oracle WebLogic Server. The supplied sources do not provide deeper technical detail, but the CISA KEV listing confirms it is known to be exploited and links to the NVD record for additional context.
Defensive priority
High priority. CISA's Known Exploited Vulnerabilities catalog includes this CVE and gives a required action of applying updates per vendor instructions, so remediation should be prioritized over routine maintenance work.
Recommended defensive actions
- Apply Oracle updates and patches per vendor instructions as soon as possible.
- Inventory all Oracle WebLogic Server instances so no deployment is missed.
- Prioritize remediation for any internet-facing or externally reachable systems.
- Confirm compensating controls and access restrictions are in place until patching is complete.
- Track the CISA KEV and NVD entries for any updates tied to this CVE.
Evidence notes
The supplied corpus identifies CVE-2015-4852 as 'Oracle WebLogic Server Deserialization of Untrusted Data Vulnerability.' CISA KEV lists Oracle WebLogic Server as the affected product, adds the entry on 2021-11-03, sets a due date of 2022-05-03, and specifies 'Apply updates per vendor instructions.' The CVE and source-item metadata both use 2021-11-03 as the publication/modified date in this corpus.
Official resources
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CVE-2015-4852 CVE record
CVE.org
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CVE-2015-4852 NVD detail
NVD
-
CISA Known Exploited Vulnerabilities catalog
CISA - Apply updates per vendor instructions.
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Source item URL
cisa_kev
Publicly documented CVE with CISA KEV listing; treated as known exploited based on the supplied official sources.