Is CVE-2015-4852 in the CISA KEV catalog?

Yes. CVE-2015-4852 is on the CISA Known Exploited Vulnerabilities list, added 2021-11-03.

What is the CVSS severity of CVE-2015-4852?

CVE-2015-4852 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2015-4852?

CVE-2015-4852 has an EPSS score of 96.03% (100th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2015-4852?

Upgrade libcommons-collections3-java on ubuntu 14.04 to 3.2.1-6ubuntu0.1~esm1 or later.

CVE & CISA-KEV Catalog

CVE-2015-4852

CRITICALCISA KEVEPSS 100th pctl

9.8

CVSS v3

NVD

Description

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.

CWE-502Deserialization of Untrusted Data

How to fix

Remediation Available

libcommons-collections3-javaUbuntu

Fixed in:3.2.1-6ubuntu0.1~esm1USN-6936-1

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

96.03%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Oracle WebLogic Server Deserialization of Untrusted Data Vulnerability

Oracle WebLogic Server contains a deserialization of untrusted data vulnerability within Apache Commons, which can allow for for remote code execution.

Apply updates per vendor instructions.

Remediation due: 2022-05-03

References

Patch5

Exploit4

Vendor Advisory1

oracle.com

Third-Party Advisory1

openwall.com

Government Resource1

cisa.gov

Product1

github.com

Other references3

Related Vulnerabilities

Other CWE-502 (Deserialization of Untrusted Data) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-0669	High	7.2	100%	KEV + Ransom	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-35464	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2023-29300	Critical	9.8	100%	KEV + Ransom	-
CVE-2025-53770	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2022-41082	High	8.0	100%	KEV + Ransom	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-21.