Skip to content
OpenAdvisories
Critical · 9.8 Public exploit CVE-2015-6420 EUVD-2020-0464GHSA-6hgm-866r-3cjv

Insecure Deserialization in Apache Commons Collection

Published Dec 15, 2015 · Updated Oct 7, 2026 · Assigned by cisco

Package: commons-collections:commons-collections Package: net.sourceforge.collections:collections-generic Package: org.apache.commons:commons-collections4 Package: org.apache.servicemix.bundles:org.apache.servicemix.bundles.collections-generic Package: org.apache.servicemix.bundles:org.apache.servicemix.bundles.commons-collections Ecosystem: Maven

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.

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Affected packages

EcosystemPackageAffectedFixedRecord
Maven commons-collections:commons-collections < 3.2.2 3.2.2 GHSA-6hgm-866r-3cjv
Maven net.sourceforge.collections:collections-generic <= 4.0.1 — GHSA-6hgm-866r-3cjv
Maven org.apache.commons:commons-collections4 < 4.1 4.1 GHSA-6hgm-866r-3cjv
Maven org.apache.servicemix.bundles:org.apache.servicemix.bundles.collections-generic <= 4.01 — GHSA-6hgm-866r-3cjv
Maven org.apache.servicemix.bundles:org.apache.servicemix.bundles.commons-collections <= 3.2.1 — GHSA-6hgm-866r-3cjv

Advisories 1

References