CVE-2008-5121: Citrix Deterministic Network Enhancer

High severity, CVSS 7.2. EPSS: 1.1% chance of exploitation in the next 30 days.

dne2000.sys in Citrix Deterministic Network Enhancer (DNE) 2.21.7.233 through 3.21.7.17464, as used in (1) Cisco VPN Client, (2) Blue Coat WinProxy, and (3) SafeNet SoftRemote and HighAssurance Remote, allows local users to gain privileges via a crafted DNE_IOCTL DeviceIoControl request to the \\.\DNE device interface.

Affected products

• Citrix Deterministic Network Enhancer: version 2.21.7.223 only; version 3.21.7.17464 only

Published 2008-11-18. Last modified 2026-06-16.