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
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 96%CVSS: 9.8Exploit: cisa kev · ssvc active · Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed: 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)
EG Risk
99(Act)
EG Risk 99/100SSVC: Act

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Fix now — active exploitation, automatable, high impact.
EPSS PROB
96%
EPSS %ILE
100%
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) @ trusty2026-07-26ubuntu

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 41× in last 7d / 281× 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 609 total refreshes for this CVE.

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

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.

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