CVE-2015-4852

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 5 sources updated this weekExploited in the wild
9.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 96%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

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 v3
9.8
EG Score
9.8(high)
EPSS
99.9%
KEV
⚠ Exploited

Published

November 18, 2015

Last Modified

April 21, 2026

Advisory Details (4)

Auto-updated Apr 30, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic
http://www.securityfocus.com/bid/77539
generic

oss-security - Re: Assign CVE for common-collections remote code execution on deserialisation flaw

http://www.openwall.com/lists/oss-security/2015/11/17/19
generic

Packet Storm

http://packetstormsecurity.com/files/152268/Oracle-Weblogic-Server-Deserialization-Remote-Code-Execution.html
generic🔴 Active Exploitation

What Do WebLogic, WebSphere, JBoss, Jenkins, OpenNMS, and Your Application Have in Common? This Vulnerability.

http://foxglovesecurity.com/2015/11/06/what-do-weblogic-websphere-jboss-jenkins-opennms-and-your-application-have-in-common-this-vulnerability/

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibcommons-collections3-java-doc (3.2.1-6ubuntu0.1~esm1) @ trusty2026-07-22ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 69× in last 7d / 309× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 588 total refreshes for this CVE.

  1. 2026-07-22 14:12 UTCVendor advisory
  2. 2026-07-22 14:12 UTCGHSA enrichment
  3. 2026-07-22 09:51 UTCGHSA enrichment
  4. 2026-07-22 05:31 UTCGHSA enrichment
  5. 2026-07-22 01:10 UTCGHSA enrichment
  6. 2026-07-21 18:33 UTCGHSA enrichment
  7. 2026-07-21 14:37 UTCCISA KEV update
  8. 2026-07-21 14:12 UTCGHSA enrichment
  9. 2026-07-21 09:52 UTCGHSA enrichment
  10. 2026-07-21 05:30 UTCVendor advisory
  11. 2026-07-21 05:30 UTCGHSA enrichment
  12. 2026-07-21 01:08 UTCVendor advisory
  13. 2026-07-21 01:08 UTCGHSA enrichment
  14. 2026-07-20 20:48 UTCEG score recompute
  15. 2026-07-20 20:48 UTCVendor advisory
  16. 2026-07-20 20:48 UTCGHSA enrichment
  17. 2026-07-20 17:03 UTCEPSS rescore
  18. 2026-07-20 16:28 UTCVendor advisory
  19. 2026-07-20 16:28 UTCGHSA enrichment
  20. 2026-07-20 12:08 UTCGHSA enrichment
  21. 2026-07-20 07:47 UTCVendor advisory
  22. 2026-07-20 07:47 UTCGHSA enrichment
  23. 2026-07-20 03:26 UTCVendor advisory
  24. 2026-07-20 03:26 UTCGHSA enrichment
  25. 2026-07-19 23:06 UTCVendor advisory
Show 75 more
  1. 2026-07-19 23:06 UTCGHSA enrichment
  2. 2026-07-19 18:46 UTCVendor advisory
  3. 2026-07-19 18:46 UTCGHSA enrichment
  4. 2026-07-19 14:26 UTCVendor advisory
  5. 2026-07-19 14:26 UTCGHSA enrichment
  6. 2026-07-19 10:07 UTCVendor advisory
  7. 2026-07-19 10:07 UTCGHSA enrichment
  8. 2026-07-19 05:47 UTCVendor advisory
  9. 2026-07-19 05:47 UTCGHSA enrichment
  10. 2026-07-19 01:27 UTCVendor advisory
  11. 2026-07-19 01:27 UTCGHSA enrichment
  12. 2026-07-18 21:05 UTCVendor advisory
  13. 2026-07-18 21:05 UTCGHSA enrichment
  14. 2026-07-18 16:45 UTCVendor advisory
  15. 2026-07-18 16:45 UTCGHSA enrichment
  16. 2026-07-18 12:25 UTCVendor advisory
  17. 2026-07-18 12:25 UTCGHSA enrichment
  18. 2026-07-18 08:05 UTCVendor advisory
  19. 2026-07-18 08:05 UTCGHSA enrichment
  20. 2026-07-18 03:45 UTCVendor advisory
  21. 2026-07-18 03:45 UTCGHSA enrichment
  22. 2026-07-17 23:25 UTCVendor advisory
  23. 2026-07-17 23:25 UTCGHSA enrichment
  24. 2026-07-17 19:05 UTCVendor advisory
  25. 2026-07-17 19:05 UTCGHSA enrichment
  26. 2026-07-17 14:45 UTCGHSA enrichment
  27. 2026-07-17 10:24 UTCEG score recompute
  28. 2026-07-17 10:23 UTCGHSA enrichment
  29. 2026-07-17 06:03 UTCGHSA enrichment
  30. 2026-07-17 01:43 UTCGHSA enrichment
  31. 2026-07-16 21:24 UTCVendor advisory
  32. 2026-07-16 21:24 UTCGHSA enrichment
  33. 2026-07-16 17:04 UTCVendor advisory
  34. 2026-07-16 17:04 UTCGHSA enrichment
  35. 2026-07-16 17:04 UTCCISA KEV update
  36. 2026-07-16 12:43 UTCGHSA enrichment
  37. 2026-07-16 08:20 UTCVendor advisory
  38. 2026-07-16 08:20 UTCGHSA enrichment
  39. 2026-07-16 04:00 UTCVendor advisory
  40. 2026-07-16 04:00 UTCGHSA enrichment
  41. 2026-07-15 23:40 UTCVendor advisory
  42. 2026-07-15 23:40 UTCGHSA enrichment
  43. 2026-07-15 19:20 UTCVendor advisory
  44. 2026-07-15 19:20 UTCGHSA enrichment
  45. 2026-07-15 16:49 UTCCISA KEV update
  46. 2026-07-15 15:04 UTCCISA KEV update
  47. 2026-07-15 15:00 UTCGHSA enrichment
  48. 2026-07-15 10:39 UTCGHSA enrichment
  49. 2026-07-15 06:17 UTCGHSA enrichment
  50. 2026-07-15 01:57 UTCVendor advisory
  51. 2026-07-15 01:57 UTCGHSA enrichment
  52. 2026-07-14 21:37 UTCVendor advisory
  53. 2026-07-14 21:37 UTCGHSA enrichment
  54. 2026-07-14 18:05 UTCCISA KEV update
  55. 2026-07-14 17:17 UTCGHSA enrichment
  56. 2026-07-14 12:53 UTCGHSA enrichment
  57. 2026-07-14 08:33 UTCGHSA enrichment
  58. 2026-07-14 04:13 UTCVendor advisory
  59. 2026-07-14 04:13 UTCGHSA enrichment
  60. 2026-07-13 23:53 UTCVendor advisory
  61. 2026-07-13 23:53 UTCGHSA enrichment
  62. 2026-07-13 19:33 UTCVendor advisory
  63. 2026-07-13 19:32 UTCGHSA enrichment
  64. 2026-07-13 17:07 UTCCISA KEV update
  65. 2026-07-13 15:11 UTCVendor advisory
  66. 2026-07-13 15:10 UTCGHSA enrichment
  67. 2026-07-13 10:50 UTCVendor advisory
  68. 2026-07-13 10:50 UTCGHSA enrichment
  69. 2026-07-13 06:29 UTCGHSA enrichment
  70. 2026-07-13 02:07 UTCVendor advisory
  71. 2026-07-13 02:07 UTCGHSA enrichment
  72. 2026-07-12 21:47 UTCVendor advisory
  73. 2026-07-12 21:47 UTCGHSA enrichment
  74. 2026-07-12 17:28 UTCVendor advisory
  75. 2026-07-12 17:28 UTCGHSA enrichment

Publicly available exploits

(7 references)

Working exploit code is in the public domain (1 Metasploit module) (3 GitHub PoCs) (3 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCzhzhdoai/Weblogic_Vuln
    First seen Aug 10, 2020

    CVE-2015-4852、CVE-2016-0638、CVE-2016-3510、CVE-2019-2890漏洞POC

    Open source ↗
  • Exploit-DBEDB-46628✓ verified
    First seen Mar 28, 2019

    Oracle Weblogic Server Deserialization RCE - Raw Object (Metasploit)

    Open source ↗
  • GitHub PoCAndersonSingh/serialization-vulnerability-scanner
    First seen Nov 25, 2017

    CVE-2015-4852 Oracle WebLogic Scanner

    Open source ↗
  • Exploit-DBEDB-42806
    First seen Sep 27, 2017

    Oracle WebLogic Server 10.3.6.0 - Java Deserialization Remote Code Execution

    Open source ↗
  • Exploit-DBEDB-44552
    First seen Jul 20, 2016

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

    Open source ↗
  • GitHub PoCroo7break/serialator
    First seen Mar 3, 2016

    Python script to exploit CVE-2015-4852.

    Open source ↗
  • Metasploitexploit/multi/misc/weblogic_deserialize_rawobject✓ verified
    First seen Jan 28, 2015

    Oracle Weblogic Server Deserialization RCE - Raw Object

    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(6)

What is CVE-2015-4852?
CVE-2015-4852 is a critical vulnerability published on November 18, 2015. 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…
When was CVE-2015-4852 disclosed?
CVE-2015-4852 was first published in the National Vulnerability Database on November 18, 2015, with the most recent update on April 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-4852 actively exploited?
Yes. CISA added CVE-2015-4852 to the Known Exploited Vulnerabilities catalog on November 3, 2021, affecting Oracle WebLogic Server. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2015-4852?
CVE-2015-4852 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2015-4852?
CVE-2015-4852 affects Oracle WebLogic Server. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2015-4852?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-4852, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2015-4852

Explore →

Is Your Infrastructure Affected by CVE-2015-4852?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs