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CVE-2008-5121

27
FAUCET Score

CVE-2008-5121 describes a local privilege escalation vulnerability in the dne2000.sys driver, part of Citrix Deterministic Network Enhancer (DNE) versions 2.21.7.233 through 3.21.7.17464. This affects products like Cisco VPN Client, Blue Coat WinProxy, and SafeNet SoftRemote/HighAssurance Remote. An attacker can exploit this by sending a crafted DNE_IOCTL DeviceIoControl request to the \\.\DNE device interface, leading to full compromise of the system. The vulnerability has a CVSS score of 7.2, indicating high severity with local access and low attack complexity. While not listed in CISA KEV, a public exploit (EDB-5837) exists, though there is no evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
2.21.7.223CPE matchmatch criteria
cpe:2.3:a:citrix:deterministic_network_enhancer:2.21.7.223:*:*:*:*:*:*:*
3.21.7.17464CPE matchmatch criteria
cpe:2.3:a:citrix:deterministic_network_enhancer:3.21.7.17464:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.2HIGH

AV:L/AC:L/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.13%
Probability of exploitation in next 30 days
EPSS Percentile
63.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
ExploitDB: EDB-5837 · Jun 17, 2008
This CVE's current EPSS score of 0.0113 is in the 82nd percentile among its peer group of 3,237 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.5 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

secunia.com / advisories/30728
Vendor Advisory
secunia.com / advisories/30744
Vendor Advisory
secunia.com / advisories/30747
Vendor Advisory
secunia.com / advisories/30753
securityreason.com / securityalert/4600
exchange.xforce.ibmcloud.com / vulnerabilities/43153
support.citrix.com / article/CTX117751
exploit-db.com / exploits/5837
tools.cisco.com / Support/BugToolKit/search/getBugDetails.do
digit-labs.org / files/exploits/dne2000-call.c
kb.cert.org / vuls/id/858993
US Government Resource
securityfocus.com / bid/29772
vupen.com / english/advisories/2008/1865
vupen.com / english/advisories/2008/1866
vupen.com / english/advisories/2008/1867
vupen.com / english/advisories/2008/1868