CVE-2014-6259: Zenoss Core

Medium severity, CVSS 5.0. EPSS: 1.6% chance of exploitation in the next 30 days.

Zenoss Core through 5 Beta 3 does not properly detect recursion during entity expansion, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, aka ZEN-15414, a similar issue to CVE-2003-1564.

Affected products

• Zenoss Zenoss Core: up to and including 5.0.0; version 2.4.0 only; version 2.4.5 only; version 2.5.0 only; version 2.5.1 only; version 2.5.2 only; …

Published 2014-12-15. Last modified 2026-06-17.