Disclosure summary
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.
Source-reported weakness categories
CWE-502
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2015-6420
Open original source · Updated Oct 07, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| apache | commons_collections | * {"versionStartIncluding":"3.0","versionEndExcluding":"3.2.2"} |
| apache | commons_collections | 4.0 |
Original records & references
- NIST NVD record
- CVE Program record
- h20566.www2.hpe.com — Third Party Advisory
- h20566.www2.hpe.com — Third Party Advisory
- lists.apache.org — Vendor Advisory
- www.kb.cert.org — Third Party Advisory
- www.tenable.com — Third Party Advisory
- www.tenable.com — Third Party Advisory
- foxglovesecurity.com — Exploit, Third Party Advisory
- h20566.www2.hpe.com — Third Party Advisory
- h20566.www2.hpe.com — Third Party Advisory
- lists.apache.org — Vendor Advisory
- news.apache.org — Vendor Advisory
- www.kb.cert.org — Third Party Advisory
- www.kb.cert.org — Third Party Advisory
- www.tenable.com — Third Party Advisory
- www.tenable.com — Third Party Advisory
PUBLISHED 2015-12-15T00:59:07-05:00
MODIFIED 2026-10-07T14:17:07-04:00
INGESTED 2026-10-08T12:30:34-04:00