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CVE-2015-6420

CRITICAL

9.8

CVSS Severity Score

EPSS Score0.0270%

EPSS Percentile19.53th

PublishedDec 15, 2015

Last ModifiedFeb 24, 2026

Vulnerability Description

Serialized-object interfaces in certain Cisco Collaboration and Social Media; Endpoint Clients and Client Software; Network Application, Service, and Acceleration; Network and Content Security Devices; Network Management and Provisioning; Routing and Switching - Enterprise and Service Provider; Unified Computing; Voice and Unified Communications Devices; Video, Streaming, TelePresence, and Transcoding Devices; Wireless; and Cisco Hosted Services products allow remote attackers to execute arbitrary commands via a crafted serialized Java object, related to the Apache Commons Collections (ACC) library.

Affected Platforms (CPE)

📦

Apache

Commons Collections

>= 3.0 and < 3.2.2

📦

Apache

Commons Collections

= 4.0

References & Advisories

🔗 http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151209-java-deserialization

🔗 http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html

🔗 http://www.securityfocus.com/bid/78872

🔗 https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05376917

🔗 https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722

🔗 https://lists.apache.org/thread.html/r352e40ca9874d1beb4ad95403792adca7eb295e6bc3bd7b65fabcc21%40%3Ccommits.samza.apache.org%3E

🔗 https://www.kb.cert.org/vuls/id/581311

🔗 https://www.tenable.com/security/research/tra-2017-14

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CVE-2015-6420 Detail & Impact Analysis | CVSS 9.8 (CRITICAL) | Cyber-Sec.Space | Cyber-Sec.Space